SUMMARY
Dolphin crashes on compressing files with ARK from context menu with 7zip compression

STEPS TO REPRODUCE
1. open dolphin
2. select any set of files
3. select Compress > Compress to
4. give any file name, but select 7zip archive and start the compression

OBSERVED RESULT
The compression never ends and pressing the stop button in the compression popup causes a segmentation fault and closes Dolphin. (But the compression proceeds successfully)

EXPECTED RESULT
No segmentation fault

NOTE
Compressing the same files and folders from within ARK does not lead to any segmentation fault.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 5.14.10-1
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#4  0x00007f19c5571616 in KJob::kill(KJob::KillVerbosity) () from /usr/lib/libKF5CoreAddons.so.5
#5  0x00007f19c557164c in KJob::kill(KJob::KillVerbosity) () from /usr/lib/libKF5CoreAddons.so.5
#6  0x00007f19c433891b in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f19c5f215f3 in ?? () from /usr/lib/libKF5JobWidgets.so.5
#8  0x00007f19c53ec590 in ?? () from /usr/lib/libQt5DBus.so.5
#9  0x00007f19c432f057 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#10 0x00007f19c4de5ff6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#11 0x00007f19c43011ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#12 0x00007f19c4304369 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#13 0x00007f19c435b4c8 in ?? () from /usr/lib/libQt5Core.so.5
#14 0x00007f19c1ddf4dc in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#15 0x00007f19c1e33749 in ?? () from /usr/lib/libglib-2.0.so.0
#16 0x00007f19c1ddcbc1 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#17 0x00007f19c435aada in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#18 0x00007f19c42ffa6b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#19 0x00007f19c4308258 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#20 0x000055c80278d518 in ?? ()
#21 0x00007f19c3c83b25 in __libc_start_main () from /usr/lib/libc.so.6
#22 0x000055c80278d90e in ?? ()
[Inferior 1 (process 3710) detached]