STEPS TO REPRODUCE
1. connect an external monitor to hdmi port
2. start Wayland session
3. set multi-monitor mode to "Unify outputs"
4. restart Wayland session

OBSERVED RESULT
no plasma panel

EXPECTED RESULT
plasma panel should be loaded

SOFTWARE/OS VERSIONS
Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.18.80
KDE Frameworks Version: 5.69.0
Qt Version: 5.14.1
Kernel Version: 5.3.0-45-generic
OS Type: 64-bit
Processors: 4 × Intel® Core™ i3-3110M CPU @ 2.40GHz
Memory: 7,7 GiB of RAM
Graphics Processor: Mesa DRI Intel® Ivybridge Mobile

ADDITIONAL INFORMATION
I'm not sure if this is related, but I noticed that kded5 crashes after the last step above.


Thread 1 (Thread 0x7f22c17a5800 (LWP 3588)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f22be77f801 in __GI_abort () at abort.c:79
#2  0x00007f22bef4759b in qt_message_fatal (context=..., message=<synthetic pointer>...)
    at global/qlogging.cpp:1894
#3  QMessageLogger::fatal (this=this@entry=0x7ffe36e59370, msg=msg@entry=0x7f22c0392840 "%s")
    at global/qlogging.cpp:893
#4  0x00007f22bfee5194 in init_platform (argv=<optimized out>, argc=<optimized out>, 
    platformThemeName=..., platformPluginPath=..., pluginNamesWithArguments=...)
    at kernel/qguiapplication.cpp:1249
#5  QGuiApplicationPrivate::createPlatformIntegration (this=0x55a3a85f94d0)
    at kernel/qguiapplication.cpp:1476
#6  0x00007f22bfee565d in QGuiApplicationPrivate::createEventDispatcher (this=<optimized out>)
    at kernel/qguiapplication.cpp:1493
#7  0x00007f22bf162ba5 in QCoreApplicationPrivate::init (this=this@entry=0x55a3a85f94d0)
    at kernel/qcoreapplication.cpp:865
#8  0x00007f22bfee744f in QGuiApplicationPrivate::init (this=this@entry=0x55a3a85f94d0)
    at kernel/qguiapplication.cpp:1522
#9  0x00007f22c0ea430e in QApplicationPrivate::init (this=0x55a3a85f94d0)
    at kernel/qapplication.cpp:539
#10 0x000055a3a79a3579 in main (argc=<optimized out>, argv=0x7ffe36e597c8) at ./src/kded.cpp:743

Thread 1 (Thread 0x7f22c17a5800 (LWP 3588)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f22be77f801 in __GI_abort () at abort.c:79
#2  0x00007f22bef4759b in qt_message_fatal (context=..., message=<synthetic pointer>...)
    at global/qlogging.cpp:1894
#3  QMessageLogger::fatal (this=this@entry=0x7ffe36e59370, msg=msg@entry=0x7f22c0392840 "%s")
    at global/qlogging.cpp:893
#4  0x00007f22bfee5194 in init_platform (argv=<optimized out>, argc=<optimized out>, 
    platformThemeName=..., platformPluginPath=..., pluginNamesWithArguments=...)
    at kernel/qguiapplication.cpp:1249
#5  QGuiApplicationPrivate::createPlatformIntegration (this=0x55a3a85f94d0)
    at kernel/qguiapplication.cpp:1476
#6  0x00007f22bfee565d in QGuiApplicationPrivate::createEventDispatcher (this=<optimized out>)
    at kernel/qguiapplication.cpp:1493
#7  0x00007f22bf162ba5 in QCoreApplicationPrivate::init (this=this@entry=0x55a3a85f94d0)
    at kernel/qcoreapplication.cpp:865
#8  0x00007f22bfee744f in QGuiApplicationPrivate::init (this=this@entry=0x55a3a85f94d0)
    at kernel/qguiapplication.cpp:1522
#9  0x00007f22c0ea430e in QApplicationPrivate::init (this=0x55a3a85f94d0)
    at kernel/qapplication.cpp:539
#10 0x000055a3a79a3579 in main (argc=<optimized out>, argv=0x7ffe36e597c8) at ./src/kded.cpp:743
Error detected on fd 0
error detected on stdin
Exception ignored in: <gdb.GdbOutputFile object at 0x7f0c9ac4fc50>
Traceback (most recent call last):
  File "/usr/share/gdb/python/gdb/__init__.py", line 43, in flush
    def flush(self):
KeyboardInterrupt