This bug was marked as a duplicate of bug #1780664 But now I can see on bug #1780664 :
This bug was fixed in the package xorg-server - 2:1.18.4-0ubuntu0.8 I updated to this package, but it didn't help me. It seems the "duplicate" status was wrong. The workaround still helps, but the fix of bug #1780664 did not help me. I removed the "duplicate" tag. ** This bug is no longer a duplicate of bug 1780664 Recent libgl-mesa graphics update prevents drop down list menu appearing in apps like firefox three line/bar menu icon -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1780846 Title: After update 2018-07-08 menus and buttons are behaving badly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1780846/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
