I just managed to reproduce the crash locally. Just before the crash, the following lines are printed to stderr:
(AppImageLauncherSettings:27871): Gtk-WARNING **: 21:45:01.935: Could not load a pixbuf from icon theme. This may indicate that pixbuf loaders or the mime database could not be found. ** Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/16x16/status/image-missing.png: Fatal error reading PNG image file: bad parameters to zlib (gdk-pixbuf-error-quark, 0) I think most important part here is “bad parameters to zlib”. AppImageLauncher uses its own static zlib (lib/AppImageUpdate/lib/zsync2/lib/zlib/libzsync2_libz.a) which is incompatible with public zlib (/lib/x86_64-linux-gnu/libz.so.1) that GTK was compiled against. Recompiling AppImageLauncher with system zlib should help, but I haven’t found a way to do that. I suggest you to ask AppImageLauncher developer about that. Attaching a stacktrace for future reference. ** Attachment added: "stacktrace.txt" https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1838891/+attachment/5283815/+files/stacktrace.txt ** Changed in: qtbase-opensource-src (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1838891 Title: qt5 applications crash when opening file chooser in gtk desktops Status in qtbase-opensource-src package in Ubuntu: Invalid Bug description: Issue is apparently related to qt5-gtk-platformtheme. When you're in a non-Qt desktop environment and you open a file selection dialog from a Qt app it crashes. See also: https://bugzilla.redhat.com/show_bug.cgi?id=1392605 https://bugs.archlinux.org/task/57984 https://github.com/TheAssassin/AppImageLauncher/issues/218 In my opinion this is a very serious issue and if newer Qt releases have fixed this it should be backported. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1838891/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
