I verified the Xfce bug by installing the xfce4 metapackage on top of Ubuntu 18.10. I could see the cursor flickering (and missing tooltip) by hovering over the text for one of the links in Archive Manager's Help.
After installing libgtk-3-0 (and related packages) 3.24.4-0ubuntu1, the tooltip displayed correctly without flickering. I also ran several gtk3 apps in Ubuntu 18.10 and verified that they worked fine. I confirmed that switches looked ok with the Yaru and Adwaita themes. ** Tags removed: verification-needed verification-needed-cosmic ** Tags added: verification-done verification-done-cosmic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1808233 Title: Update gtk to 3.24.4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1808233/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs