There is a long standing issue in #phoc (the #wayland compositor used with #phosh (but as I recently learned also other projects like #bananui) that makes windows flip their size when crossing a screen edge (as tiling is (incorrectly) kicking in). This makes dragging windows around in docked mode harder than necessary.
This is about to improve and (thanks to the ground work over the past months) we can also add some visual feedback: