Application: systemsettings5 (5.18.4)

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-26-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:

1. Make sure that Breeze Dark is the current global theme
2. Open System Settings
3. Open and switch between some random modules (I don't remember which)
4. Open the global theme module
5. Select "Breeze"
6. Click "Apply"
7. Notice that the system becomes a mix of both themes for a moment
8. Notice that the System Settings window disappears
9: Notice that the system is now in the Breeze theme

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc8626f5800 (LWP 3385))]

Thread 20 (Thread 0x7fc8062e7700 (LWP 3431)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f380edc4d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f380edc488, cond=0x55f380edc4b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f380edc4b0, mutex=0x55f380edc488) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fc804c16700 (LWP 3429)):
#0  0x00007fc85efd733d in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc85ef8a2ce in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc8612de583 in QEventDispatcherGlib::processEvents (this=0x7fc7f0000ff0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#3  0x00007fc8612854db in QEventLoop::exec (this=this@entry=0x7fc804c15d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#4  0x00007fc8610bd785 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#5  0x00007fc8603441a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fc8610be9d2 in QThreadPrivate::start (arg=0x55f37e90e1f0) at thread/qthread_unix.cpp:361
#7  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fc806e27700 (LWP 3406)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37fa1663c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37fa165e8, cond=0x55f37fa16610) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37fa16610, mutex=0x55f37fa165e8) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fc8079f4700 (LWP 3405)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37f6d72c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37f6d7278, cond=0x55f37f6d72a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37f6d72a0, mutex=0x55f37f6d7278) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fc8189f6700 (LWP 3404)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37f17014c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37f1700f8, cond=0x55f37f170120) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37f170120, mutex=0x55f37f1700f8) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fc8191fd700 (LWP 3403)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37f0f4308) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37f0f42b8, cond=0x55f37f0f42e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37f0f42e0, mutex=0x55f37f0f42b8) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fc81b135700 (LWP 3402)):
#0  0x00007fc85ef8672d in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc85ef88185 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc85ef8966b in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc85ef8a0db in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc85ef8a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc8612de583 in QEventDispatcherGlib::processEvents (this=0x7fc810000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007fc8612854db in QEventLoop::exec (this=this@entry=0x7fc81b134d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007fc8610bd785 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007fc8603441a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fc8610be9d2 in QThreadPrivate::start (arg=0x55f37eaec4f0) at thread/qthread_unix.cpp:361
#10 0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fc84494f700 (LWP 3400)):
#0  0x00007fc85efd7368 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc85ef89b70 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc85ef8a152 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc85ef8a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc8612de583 in QEventDispatcherGlib::processEvents (this=0x7fc814000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fc8612854db in QEventLoop::exec (this=this@entry=0x7fc84494ed80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007fc8610bd785 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007fc8603441a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fc8610be9d2 in QThreadPrivate::start (arg=0x55f37e9536d0) at thread/qthread_unix.cpp:361
#9  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fc845dab700 (LWP 3398)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37eeb3fa8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37eeb3f58, cond=0x55f37eeb3f80) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37eeb3f80, mutex=0x55f37eeb3f58) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fc8465ac700 (LWP 3397)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37eeb3fa8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37eeb3f58, cond=0x55f37eeb3f80) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37eeb3f80, mutex=0x55f37eeb3f58) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fc846dad700 (LWP 3396)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37eeb38a4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37eeb3850, cond=0x55f37eeb3878) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37eeb3878, mutex=0x55f37eeb3850) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fc8475ae700 (LWP 3395)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37eeb38a4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37eeb3850, cond=0x55f37eeb3878) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37eeb3878, mutex=0x55f37eeb3850) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fc847daf700 (LWP 3394)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37eeb38a4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37eeb3850, cond=0x55f37eeb3878) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37eeb3878, mutex=0x55f37eeb3850) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fc85097b700 (LWP 3393)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37e75c25c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37e75c208, cond=0x55f37e75c230) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37e75c230, mutex=0x55f37e75c208) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fc85117c700 (LWP 3392)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37e75c25c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37e75c208, cond=0x55f37e75c230) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37e75c230, mutex=0x55f37e75c208) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fc85197d700 (LWP 3391)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37e75c258) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37e75c208, cond=0x55f37e75c230) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37e75c230, mutex=0x55f37e75c208) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fc85217e700 (LWP 3390)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37e75c25c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37e75c208, cond=0x55f37e75c230) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37e75c230, mutex=0x55f37e75c208) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fc85297f700 (LWP 3389)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f37ec6d90c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f37ec6d8b8, cond=0x55f37ec6d8e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f37ec6d8e0, mutex=0x55f37ec6d8b8) at pthread_cond_wait.c:638
#3  0x00007fc852dfc3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fc852dfbfeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fc85a937700 (LWP 3388)):
#0  0x00007fc860d3596f in __GI___poll (fds=0x7fc84c012e80, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc85ef8a1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc85ef8a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc8612de583 in QEventDispatcherGlib::processEvents (this=0x7fc84c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fc8612854db in QEventLoop::exec (this=this@entry=0x7fc85a936d70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007fc8610bd785 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007fc861567efa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fc8610be9d2 in QThreadPrivate::start (arg=0x7fc8615ead80) at thread/qthread_unix.cpp:361
#8  0x00007fc85f899609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fc860d42103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fc8626f5800 (LWP 3385)):
[KCrash Handler]
#6  0x00007fc8629230bd in KCModuleQml::save (this=<optimized out>) at /usr/include/c++/9/bits/unique_ptr.h:360
#7  0x00007fc862929ddf in KCModuleProxy::save (this=<optimized out>) at ./src/kcmoduleproxy.cpp:239
#8  0x00007fc862973285 in ModuleView::moduleSave (this=<optimized out>, module=<optimized out>) at ./core/ModuleView.cpp:296
#9  0x00007fc8629735a8 in ModuleView::moduleSave (this=<optimized out>) at ./core/ModuleView.cpp:287
#10 0x00007fc86296deb6 in ModuleView::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0x7fffc0eb4320, _c=<optimized out>) at ./obj-x86_64-linux-gnu/core/systemsettingsview_autogen/EWIEGA46WW/moc_ModuleView.cpp:121
#11 0x00007fc8612b2300 in QMetaObject::activate (sender=0x55f37e6f94c0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3804
#12 0x00007fc861e3f806 in QAbstractButton::clicked (this=this@entry=0x55f37e6f94c0, _t1=<optimized out>) at .moc/moc_qabstractbutton.cpp:312
#13 0x00007fc861e3fa2e in QAbstractButtonPrivate::emitClicked (this=0x55f37ec54070) at widgets/qabstractbutton.cpp:414
#14 0x00007fc861e40e73 in QAbstractButtonPrivate::click (this=0x55f37ec54070) at widgets/qabstractbutton.cpp:407
#15 0x00007fc861e41035 in QAbstractButton::mouseReleaseEvent (this=0x55f37e6f94c0, e=0x7fffc0eb4890) at widgets/qabstractbutton.cpp:1011
#16 0x00007fc861d8d2b6 in QWidget::event (this=0x55f37e6f94c0, event=0x7fffc0eb4890) at kernel/qwidget.cpp:8981
#17 0x00007fc861d4aa66 in QApplicationPrivate::notify_helper (this=this@entry=0x55f37e437e80, receiver=receiver@entry=0x55f37e6f94c0, e=e@entry=0x7fffc0eb4890) at kernel/qapplication.cpp:3700
#18 0x00007fc861d54343 in QApplication::notify (this=<optimized out>, receiver=0x55f37e6f94c0, e=0x7fffc0eb4890) at kernel/qapplication.cpp:3160
#19 0x00007fc86128693a in QCoreApplication::notifyInternal2 (receiver=0x55f37e6f94c0, event=0x7fffc0eb4890) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
#20 0x00007fc861d53457 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x55f37e6f94c0, event=event@entry=0x7fffc0eb4890, alienWidget=alienWidget@entry=0x55f37e6f94c0, nativeWidget=0x55f37e5274d0, buttonDown=buttonDown@entry=0x7fc86227a8d0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2646
#21 0x00007fc861da935d in QWidgetWindow::handleMouseEvent (this=0x55f37e76afd0, event=0x7fffc0eb4d10) at /usr/include/c++/9/bits/atomic_base.h:413
#22 0x00007fc861dac1ec in QWidgetWindow::event (event=0x7fffc0eb4d10, this=0x55f37e76afd0) at kernel/qwidgetwindow.cpp:289
#23 QWidgetWindow::event (this=0x55f37e76afd0, event=0x7fffc0eb4d10) at kernel/qwidgetwindow.cpp:232
#24 0x00007fc861d4aa66 in QApplicationPrivate::notify_helper (this=this@entry=0x55f37e437e80, receiver=receiver@entry=0x55f37e76afd0, e=e@entry=0x7fffc0eb4d10) at kernel/qapplication.cpp:3700
#25 0x00007fc861d540f0 in QApplication::notify (this=0x7fffc0eb5190, receiver=0x55f37e76afd0, e=0x7fffc0eb4d10) at kernel/qapplication.cpp:3446
#26 0x00007fc86128693a in QCoreApplication::notifyInternal2 (receiver=0x55f37e76afd0, event=0x7fffc0eb4d10) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
#27 0x00007fc8617167d3 in QGuiApplicationPrivate::processMouseEvent (e=e@entry=0x55f3806d0eb0) at kernel/qguiapplication.cpp:2107
#28 0x00007fc86171810b in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55f3806d0eb0) at kernel/qguiapplication.cpp:1842
#29 0x00007fc8616f235b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1151
#30 0x00007fc85c08132e in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#31 0x00007fc85ef89fbd in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fc85ef8a240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fc85ef8a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fc8612de565 in QEventDispatcherGlib::processEvents (this=0x55f37e526c40, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#35 0x00007fc8612854db in QEventLoop::exec (this=this@entry=0x7fffc0eb50b0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#36 0x00007fc86128d246 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#37 0x000055f37d926856 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:70
[Inferior 1 (process 3385) detached]

Possible duplicates by query: bug 420399, bug 418989, bug 417276, bug 410475, bug 404044.

Reported using DrKonqi