After a lot of investigation, it seems this is caused by Compiz' default Edge Flipping binding to the top of the screen under Desktop Wall -> Bindings -> Edge Flipping. Changing Top to None resolves this.
-- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1754855 Title: With Compiz only, can't rollover between top pixel tow of menu items To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1754855/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
