Application: systemsettings5 (5.11.4)

Qt Version: 5.9.3
Frameworks Version: 5.40.0
Operating System: Linux 4.14.4-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
I was simply browsing various settings. I was in font section, crash occurred as I closed the window.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd35e423800 (LWP 17575))]

Thread 2 (Thread 0x7fd342077700 (LWP 17577)):
#0  0x00007fd35a08df2b in poll () at /usr/lib/libc.so.6
#1  0x00007fd353c44ed3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fd353c44fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fd35a9cc204 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fd35a96f99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fd35a78827e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fd35ade7376 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fd35a78d1cb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fd355e4408a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fd35a09842f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fd35e423800 (LWP 17575)):
[KCrash Handler]
#5  0x00005604c91aaac0 in  ()
#6  0x00007fd349727406 in  () at /usr/lib/libKF5Notifications.so.5
#7  0x00007fd3497274a9 in  () at /usr/lib/libKF5Notifications.so.5
#8  0x00007fd35a99ec6d in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#9  0x00007fd35a9a88ac in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#10 0x00007fd3496f8819 in  () at /usr/lib/libKF5Notifications.so.5
#11 0x00007fd359fd9448 in __run_exit_handlers () at /usr/lib/libc.so.6
#12 0x00007fd359fd949a in  () at /usr/lib/libc.so.6
#13 0x00007fd359fc2f51 in __libc_start_main () at /usr/lib/libc.so.6
#14 0x00005604c27ced4a in _start ()

Reported using DrKonqi