Arch Linux

[choong@Arch ~]$ gdb texstudio
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Reading symbols from texstudio...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/texstudio
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[New Thread 0x7fffe91de700 (LWP 24296)]
[New Thread 0x7fffdf0e9700 (LWP 24298)]
[New Thread 0x7fffde8e8700 (LWP 24299)]
[New Thread 0x7fffde0e7700 (LWP 24300)]
[New Thread 0x7fffcf503700 (LWP 24301)]
[New Thread 0x7fffce8e7700 (LWP 24302)]
[New Thread 0x7fffcdde4700 (LWP 24303)]
[New Thread 0x7fffcd49c700 (LWP 24304)]
[New Thread 0x7fffccc9b700 (LWP 24305)]
[New Thread 0x7fffc5c8f700 (LWP 24306)]
[New Thread 0x7fffc548e700 (LWP 24307)]
[New Thread 0x7fffabfff700 (LWP 24308)]
[New Thread 0x7fffab7fe700 (LWP 24309)]
[Thread 0x7fffab7fe700 (LWP 24309) exited]
[New Thread 0x7fffab7fe700 (LWP 24319)]
[New Thread 0x7fffaaffd700 (LWP 24320)]

(texstudio:24292): Gdk-WARNING **: gdkwindow-x11.c:5554 drawable is not a native X11 window

Thread 1 "texstudio" received signal SIGSEGV, Segmentation fault.
0x00007ffff7aba495 in XChangeProperty () from /usr/lib64/libX11.so.6
(gdb) backtrace
#0 0x00007ffff7aba495 in XChangeProperty () at /usr/lib64/libX11.so.6
#1 0x00007ffff7ad7829 in XSetTransientForHint () at /usr/lib64/libX11.so.6
#2 0x00007fffe817a46e in () at /usr/lib/qt/plugins/platformthemes/libqgtk3.so
#3 0x00007fffe817d101 in () at /usr/lib/qt/plugins/platformthemes/libqgtk3.so
#4 0x00007ffff6e836f0 in QDialogPrivate::setNativeDialogVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#5 0x00007ffff6e95d32 in QFileDialog::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#6 0x00007ffff6e845a1 in QDialog::exec() () at /usr/lib64/libQt5Widgets.so.5
#7 0x00007ffff6e9683a in QFileDialog::getOpenFileUrls(QWidget*, QString const&, QUrl const&, QString const&, QString*, QFlags<QFileDialog::Option>, QStringList const&) () at /usr/lib64/libQt5Widgets.so.5
#8 0x00007ffff6e96a9f in QFileDialog::getOpenFileNames(QWidget*, QString const&, QString const&, QString const&, QString*, QFlags<QFileDialog::Option>) ()
at /usr/lib64/libQt5Widgets.so.5
#9 0x0000000000590b0c in Texstudio::fileOpen() ()
#10 0x0000000000909cda in ()
#11 0x00007ffff55a9659 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#12 0x00007ffff6c91442 in QAction::triggered(bool) () at /usr/lib64/libQt5Widgets.so.5
#13 0x00007ffff6c93e30 in QAction::activate(QAction::ActionEvent) () at /usr/lib64/libQt5Widgets.so.5
#14 0x00007ffff6d806ed in () at /usr/lib64/libQt5Widgets.so.5
#15 0x00007ffff6d80924 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007ffff6e4c29a in QToolButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007ffff6cdeef8 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#18 0x00007ffff6e4c379 in QToolButton::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#19 0x00007ffff6c97e0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007ffff6ca043d in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007ffff557dde0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007ffff6c9eaed in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
at /usr/lib64/libQt5Widgets.so.5
#23 0x00007ffff6cf8fa0 in () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007ffff6cfb743 in () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007ffff6c97e0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x00007ffff6c9f581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x00007ffff557dde0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007ffff6506303 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#29 0x00007ffff6507e85 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#30 0x00007ffff64e5cab in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#31 0x00007fffeb8002f0 in () at /usr/lib64/libQt5XcbQpa.so.5
#32 0x00007ffff1e70587 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#33 0x00007ffff1e707f0 in () at /usr/lib64/libglib-2.0.so.0
#34 0x00007ffff1e7089c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#35 0x00007ffff55d270f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#36 0x00007ffff557c23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007ffff558473c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5

Sounds like you're running Gnome on Wayland?

Thanks for pointing that out, I did not know that my gnome was running on Wayland. Had Wayland flag in /etc/gdm/custom.conf set to false and texstudio seems to be working perfectly.