I can also confirm that patching with https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/8459 at least fixes the performance issue. However, resizing windows remains quite glitchy as seen in the video.
Building your own version is pretty simple. Enable deb-src in your apt repository, then the following commands: apt-get source gtk4 apt-get build-dep gtk4 cd gtk4-4.18.4+ds wget https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/8459.patch patch -p1 < 8459.patch dpkg-buildpackage -rfakeroot -uc -b sudo dpkg -i *.deb ** Attachment added: "Screencast From 2025-06-08 14-44-22.webm" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2107245/+attachment/5882888/+files/Screencast%20From%202025-06-08%2014-44-22.webm -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2107245 Title: Resizing XWayland & X11 windows is extremely slow To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/2107245/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
