This happens because unity (compiz) doesn't advertize to support _GTK_FRAME_HINTS (as we don't), so gtk3 doesn't set up an rgba surface for tooltips and other client-side decorated windows (such as the ones with headerbar, to be fixed differently).
However in unity we do support rgba surfaces, and so to get proper transparent corners we need to force this. ** Branch linked: lp:~3v1n0/gtk/unity-rgba-tooltips -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1508357 Title: Tooltips have a black squares outside of its rounded corners Status in gtk+3.0 package in Ubuntu: In Progress Bug description: Hover over any elements on a gtk apps making a tooltip appearing. See that the tooltip is rectangular, containing rounded corner with a gradient. However, the external part is just plain black and don't have transparency as expected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1508357/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
