Yes I can see some GL code in GTK's Mir backend. However I also notice the proposed new version of GTK in zesty got promoted yesterday. I've just tested it and can't reproduce the bug yet, so it seems unlikely to be caused by that.
** Package changed: gtk+3.0 (Ubuntu) => ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649662 Title: resizing a gtk+3/mir app makes it unusable - pixels get stretched and input stops working To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1649662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs