At least in the case of -rootless -flatten, part of the problem appears to be double-reparenting. Apps like GIMP seem to keep their menu windows around even when they're not visible, presumably to help with menu scrolling performance. However Xmir has to re-realize and hence tries to re-reparent the menu windows each time. And it appears on the second and subsequent opening, a menu's relative position shifts in an unwanted way.
Without figuring out the root cause we could just avoid redundant reparenting, however that seems to create a worse problem whereby the menu goes invisible. Because we seem to need the extra reparenting to kick the XComposite logic into action. So more investigation required... -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1498738 Title: Xmir -rootless: Menus/dialogs sometimes appear in the wrong place To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1498738/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
