It appears the shape mask was intentionally disabled on X. > and disable titlebar X shape mask on mutter/X.org
Regression window: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=69f963484c0750fcaf37e151b5c910f7ebff9c25&tochange=dbf19d7364137fd04c36f04086f3445c020d2c99 Regressed by Bug 1530625. Manually creating `mozilla.widget.use-argb-visuals = true` makes the corners transparent. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828728 Title: White corners when CSD is enabled on Firefox under X11 To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1828728/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
