Per virtual desktop tile layouts (take 2)
When a quick tiled window is moved between the screens, it will migrate between the tile trees. The Tile::addWindow() will evacuate the window from the previous tile only if both tiles belong to the same tree. It's not going to be the same when moving a window between outputs. We need to handle it explicitly.
FEATURE: 466031 FIXED-IN: 6.4.0
Edited by Nate Graham