I think this might be the same compositing bug as 1510386 where Unity8 doesn't yet render RGBX correctly (it interprets the X as A instead of ignoring it).
Can you please try running neverball in mir_proving_server or mir_demo_server_* ? ** Package changed: libsdl2 (Ubuntu) => qtmir (Ubuntu) ** Package changed: neverball (Ubuntu) => unity8 (Ubuntu) ** Changed in: mir Status: New => Invalid ** Changed in: qtmir (Ubuntu) Status: New => Incomplete ** Changed in: unity8 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1605062 Title: neverball on mir is transparent, you can see the windows behind Status in Mir: Invalid Status in qtmir package in Ubuntu: Incomplete Status in unity8 package in Ubuntu: Incomplete Bug description: ubuntu 16.10 unity8 desktop neverball on mir is transparent, you can see the windows behind install neverball (apt install neverball), run it on mir, ubuntu-app-launch neverball see attached screenshot To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1605062/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp