Thank you @gedakc for pointing out that old package versions are available to download from Launchpad. I did not know that.
The intersection of the set of packages which @gedakc downgraded and the set of packages I downgraded is: libegl1-mesa:amd64 libwayland-egl1-mesa:amd64 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 mesa-vdpau-drivers:amd64 However, it is not possible to downgrade just the packages in this intersection, due to unsatisfied dependencies. -- 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/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/mesa/+bug/1780664/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp