OpenGL interface GLX must be deselected in Compositor and EGL chosen. GLX does causes "okular menu buttons not clickable and Firefox open menu button dead" problem.
Select OpenGL interface EGL. OR select XRender. The problem lies hidden somwherw in GLX. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780664 Title: Recent libgl-mesa graphics update prevents drop down list menu appearing in apps like firefox three line/bar menu icon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1780664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
