After further investigation, I've decided that this is another issue that's not a synaptic or wayland bug, but a problem with the VM video driver. I'm marking this as invalid.
** Changed in: synaptic (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1856418 Title: Synaptic in Wayland locks up display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1856418/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs