Hi Daniel, I've been digging a little deeper on this issue. First, I look for other binaries in /usr/bin that dynamically link to either libgtk or libgdk (at least for starters). In short, I found other binaries that exhibit the same issue. I may have narrowed it down to possibly /lib/x86_64-linux-gnu/libgdk-3.so.0. In addition to firefox and thunar, I can recreate the crash in font-manager and gucharmap. All four of these binaries suck in libgdk-3.so.0 dynamically. A diff of the ldd output for these binaries shows other potential culprits but thus far, libgdk-3.0.so.0 might be a likely candidate to investigate further. Interestingly, pcmanfm uses the old libgdk-x11-2.0.so.0 and does not crash.
To recap, I can create the crash at will by dragging some draggable object in any of these applications. Simply dragging it a pixel or two is all it takes. I ran thunar, font-manager and gucharmap with $GDK_SYNCHRONIZE set to 1 and the --gdk-debug=all parameter. I'll upload the respective output. Lastly, see if any of these links are helpful: Crash from font-manager: https://errors.ubuntu.com/oops/24c5e792-7624-11eb-86d5-fa163e102db1 Crash from gucharmap: https://errors.ubuntu.com/oops/7af1be1c-7623-11eb-90cd-fa163e6cac46 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1911036 Title: GDK/GTK app crash when performing drag operation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1911036/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
