This issue occurs under unspecified circumstances.
Bug trace:
" "[New LWP 2771]
[New LWP 2772]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f59
1f228b57 in waitpid () from /lib64/libpthread.so.0
#0 0x00007f591f228b57 in waitpid () at /lib64/libpthread.so.0
#1 0x000000000043b4b1 in crashTrapper(int)
(sig=11) at tupcrashhandler.cpp:321
#2 0x00007f591f229270 in
() at /lib64/libpthread.so.0 #3 0x000000000041b642 in QString::QString(
QString const&) (this=0x7fff76963840, other=...) at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/include/QtCore/qstring.h:957 #4 0x00007f5922ad1693 in TupToolPlugin::name() const (this=0x18) at tuptoolplugin.cpp:64 #5 0x00007f5922ad6891 in TupGraphicsScene::setCurrentFrame(int, int) (this=0x7f59100461b0, layer=0, frame=0) at tupgraphicsscene.cpp:134 #6 0x00007f5924870ca5 in TupPaintArea::frameResponse(TupFrameResponse*) (this=0x63e86b0, response=0x3654b70) at tuppaintarea.cpp:340 #7 0x00007f592300e9f2 in TupAbstractProjectResponseHandler::handleResponse(TupProjectResponse*) (this=0x63e87a8, response=0x3654b70) at tupabstractprojectresponsehandler.cpp:74 #8 0x00007f59248856fa in TupDocumentView::handleProjectResponse(TupProjectResponse*) (this=0x70a7fd0, response=0x3654b70) at tupdocumentview.cpp:1117 #9 0x00007f59248c5d42 in TupDocumentView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x70a7fd0, _c=QMetaObject::InvokeMetaMethod, _id=65, _a=0x7fff76963d60) at .moc/moc_tupdocumentview.cpp:440 #10 0x00007f591f964989 in QMetaObject::activate(QObject*, int, int, void**) () at /home/xtingray/Qt5.12.2/5.12.2/gcc_64/lib/libQt5Core.so.5 #11 0x00007f592302cfa9 in TupProjectManager::responsed(TupProjectResponse*) (this=0x15b7ba0, _t1=0x3654b70) at .moc/moc_tupprojectmanager.cpp:182 #12 0x00007f5922fde3a3 in TupProjectManager::handleLocalRequest(TupProjectRequest const*) (this=0x15b7ba0, request=0x7fff76964070) at tupprojectmanager.cpp:401 #13 0x00007f592302cce8 in TupProjectManager::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x15b7ba0, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff76964040) at .moc/moc_tupprojectmanager.cpp:112 #14 0x00007f591f964989 in QMetaObject::activate(QObject*, int, int, void**) () at /home/xtingray/Qt5.12.2/5.