Application: plasmashell (5.11.3)

Qt Version: 5.9.3
Frameworks Version: 5.40.0
Operating System: Linux 4.13.12-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Just finished updating via pacman. Closed out Terminal application and went to shut down the system. Clicked on the menu button and KDE locked up and crashed.

- Unusual behavior I noticed:
KDE did not respond when I clicked on the menu button. I tried clicking it a few times, but still no response. Desktop icons remained in place, but bottom menu bar crashed and recovered.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbc92d18800 (LWP 561))]

Thread 8 (Thread 0x7fbbc7a70700 (LWP 883)):
#0  0x00007fbc8c29ef7b in poll () at /usr/lib/libc.so.6
#1  0x00007fbc86b65ed3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbc86b65fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbc8cbdccf4 in QElapsedTimer::msecsSinceReference() const () at /usr/lib/libQt5Core.so.5
#4  0x0000000000000000 in  ()

Thread 7 (Thread 0x7fbbdbe25700 (LWP 724)):
#0  0x00007fbc8cbdcacd in  () at /usr/lib/libQt5Core.so.5
#1  0x00007fbbd4000be0 in  ()
#2  0x00007fbc92b704e8 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2

Thread 6 (Thread 0x7fbc67deb700 (LWP 677)):
#0  0x00007fbc8bb5c38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc923e3ef7 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fbc923e3f39 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fbc8bb5608a in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbc8c2a947f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fbc6df73700 (LWP 672)):
#0  0x00007fbc8c29aa98 in read () at /usr/lib/libc.so.6
#1  0x00007fbc86b8d521 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbc86b6490b in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbc86b65e76 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fbc86b65fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fbc8cbdccf4 in QElapsedTimer::msecsSinceReference() const () at /usr/lib/libQt5Core.so.5
#6  0x0000000000000000 in  ()

Thread 4 (Thread 0x7fbc6ffff700 (LWP 653)):
#0  0x00007fbc8c29ef7b in poll () at /usr/lib/libc.so.6
#1  0x00007fbc86b65ed3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbc86b65fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbc8cbdccf4 in QElapsedTimer::msecsSinceReference() const () at /usr/lib/libQt5Core.so.5
#4  0x0000000000000000 in  ()

Thread 3 (Thread 0x7fbc75fd6700 (LWP 578)):
#0  0x00007fbc86b8d664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fbc86b65761 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbc86b65df6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbc86b65fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fbc8cbdccf4 in QElapsedTimer::msecsSinceReference() const () at /usr/lib/libQt5Core.so.5
#5  0x0000000000000000 in  ()

Thread 2 (Thread 0x7fbc7c830700 (LWP 570)):
#0  0x00007fbc8c29ef7b in poll () at /usr/lib/libc.so.6
#1  0x00007fbc912e48e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fbc912e6679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fbc7eda885a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x0000555848190510 in  ()
#5  0x0000555848190260 in  ()
#6  0x00007fbc7c82fe40 in  ()
#7  0x00007fbc7c82fe08 in  ()
#8  0x00007ffc898cb6cf in  ()
#9  0x00007fbc8c99dfcb in  () at /usr/lib/libQt5Core.so.5
#10 0xda9d58e7859f1815 in  ()
#11 0x00007ffc898cb6ce in  ()
#12 0x00007ffc898cb6cf in  ()
#13 0x00007fbc7c830700 in  ()
#14 0x0000000000000000 in  ()

Thread 1 (Thread 0x7fbc92d18800 (LWP 561)):
[KCrash Handler]
#5  0x00007fbc8c1e78a0 in raise () at /usr/lib/libc.so.6
#6  0x00007fbc8c1e8f09 in abort () at /usr/lib/libc.so.6
#7  0x00007fbc8c988858 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fbc8cbaef0f in QMetaCallEvent::~QMetaCallEvent() () at /usr/lib/libQt5Core.so.5
#9  0x00007fbc8cc2d500 in QXmlUtils::rangeContains(QXmlCharRange const*, QXmlCharRange const*, QChar) () at /usr/lib/libQt5Core.so.5
#10 0x0000000000000000 in  ()

Reported using DrKonqi