Are you sure it's a duplicate of #874146? That bug is about opening brand new windows; this one is about opening a child window for an already-open application, eg update-manager. In my case, the popup window is always centered correctly horizontally, so whoever displays the window is reading the correct X and width setting for the parent window, just not necessarily the correct Y setting.
Are you sure it's a duplicate of #874146? That bug is about opening brand new windows; this one is about opening a child window for an already-open application, eg update-manager. In my case, the popup window is always centered correctly horizontally, so whoever displays the window is reading the correct X and width setting for the parent window, just not necessarily the correct Y setting.