I use Krita without any issue at least base on my usage but every time my work in krita is finish and I close krita, carsh dialog shown, the below text is deug report:

Application: krita (krita), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9a280dbdc0 (LWP 2903))]

Thread 2 (Thread 0x7f9a1eb20700 (LWP 2913)):
#0 0x00007f9a29243469 in g_private_get () from /usr/lib64/libglib-2.0.so.0
#1 0x00007f9a29272260 in g_thread_self () from /usr/lib64/libglib-2.0.so.0
#2 0x00007f9a2929148f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3 0x00007f9a2bcae99b in QEventDispatcherGlib::processEvents (this=0x7f9a14000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4 0x00007f9a2bc570db in QEventLoop::exec (this=this@entry=0x7f9a1eb1fc30, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5 0x00007f9a2ba8f021 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6 0x00007f9a29b5d4f6 in ?? () from /usr/lib64/libQt5DBus.so.5
#7 0x00007f9a2ba901a2 in QThreadPrivate::start (arg=0x7f9a29bdfd80) at thread/qthread_unix.cpp:360
#8 0x00007f9a29b2af2a in start_thread () from /lib64/libpthread.so.0
#9 0x00007f9a2b6ff4af in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9a280dbdc0 (LWP 2903)):
[KCrash Handler]
#6 QThreadStorageData::get (this=0x0) at ../../include/QtCore/../../src/corelib/tools/qvector.h:86
#7 0x00007f9a2bb43cc7 in QThreadStorage<QPcreJitStackPointer*>::hasLocalData (this=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qthreadstorage.h:141
#8 qtPcreCallback () at tools/qregularexpression.cpp:1094
#9 0x00007f9a293b6f52 in pcre2_jit_match_16 (code=code@entry=0x55f7b49e1d20, subject=subject@entry=0x55f7bbebef58, length=length@entry=30, start_offset=start_offset@entry=0, options=options@entry=0, match_data=match_data@entry=0x55f7bc843610, mcontext=0x55f7bd0f2660) at src/pcre2_jit_match.c:141
#10 0x00007f9a293bcfb6 in pcre2_match_16 (code=code@entry=0x55f7b49e1d20, subject=subject@entry=0x55f7bbebef58, length=length@entry=30, start_offset=start_offset@entry=0, options=options@entry=0, match_data=match_data@entry=0x55f7bc843610, mcontext=0x55f7bd0f2660) at src/pcre2_match.c:6196
#11 0x00007f9a2bb43e58 in safe_pcre2_match_16 (code=0x55f7b49e1d20, subject=0x55f7bbebef58, length=30, startOffset=0, options=0, matchData=0x55f7bc843610, matchContext=0x55f7bd0f2660) at tools/qregularexpression.cpp:1173
#12 0x00007f9a2bb47839 in QRegularExpressionPrivate::doMatch (this=0x55f7bd4f3b00, subject=..., subjectStart=0, subjectLength=30, offset=0, matchType=<optimized out>, matchOptions=..., checkSubjectStringOption=QRegularExpressionPrivate::CheckSubjectString, previous=0x0) at tools/qregularexpression.cpp:1273
#13 0x00007f9a2bb47c9c in QRegularExpression::match (this=this@entry=0x7ffe5bb16268, subject=..., offset=offset@entry=0, matchType=matchType@entry=QRegularExpression::NormalMatch, matchOptions=matchOptions@entry=...) at ../../include/QtCore/../../src/corelib/tools/qstring.h:932
#14 0x00007f9a2a556845 in QDomDocumentPrivate::saveDocument (this=0x55f7c13edfa0, s=..., indent=1, encUsed=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#15 0x00007f9a2a55b264 in QDomDocument::toString (this=this@entry=0x7ffe5bb16370, indent=indent@entry=1) at dom/qdom.cpp:6840
#16 0x00007f9a2af6fdf1 in KoResourceTagStore::writeXMLFile (this=0x55f7b646a5c0, tagstore=...) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/widgets/KoResourceTagStore.cpp:294
#17 0x00007f9a2af70275 in KoResourceTagStore::serializeTags (this=0x55f7b646a5c0) at /usr/include/qt5/QtCore/qstringbuilder.h:313
#18 0x00007f9a2af703de in KoResourceTagStore::~KoResourceTagStore (this=0x55f7b646a5c0, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/widgets/KoResourceTagStore.cpp:58
#19 0x00007f9a2df9ab08 in KoResourceServer<KisResourceBundle, PointerStoragePolicy<KisResourceBundle> >::~KoResourceServer (this=this@entry=0x55f7b649f1a0, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/widgets/KoResourceServer.h:147
#20 0x00007f9a2df9ae43 in KoResourceServerSimpleConstruction<KisResourceBundle, PointerStoragePolicy<KisResourceBundle> >::~KoResourceServerSimpleConstruction (this=0x55f7b649f1a0, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/widgets/KoResourceServer.h:747
#21 KoResourceServerSimpleConstruction<KisResourceBundle, PointerStoragePolicy<KisResourceBundle> >::~KoResourceServerSimpleConstruction (this=0x55f7b649f1a0, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/widgets/KoResourceServer.h:747
#22 0x00007f9a2df99671 in KisResourceBundleServerProvider::~KisResourceBundleServerProvider (this=0x7f9a2f03ee00 <(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder>, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/ui/KisResourceBundleServerProvider.cpp:56
#23 0x00007f9a2df99689 in (anonymous namespace)::Q_QGS_s_instance::Holder::~Holder (this=<optimized out>, __in_chrg=<optimized out>) at /usr/src/debug/krita-4.2.7.1-1.1.x86_64/libs/ui/KisResourceBundleServerProvider.cpp:38
#24 0x00007f9a2b63e877 in __run_exit_handlers () from /lib64/libc.so.6
#25 0x00007f9a2b63ea2c in exit () from /lib64/libc.so.6
#26 0x00007f9a2b626e12 in __libc_start_main () from /lib64/libc.so.6
#27 0x000055f7b135337a in _start () at ../sysdeps/x86_64/start.S:120
[Inferior 1 (process 2903) detached]

This is a bug in Qt 5.13; the next version of Krita will have a workaround.