When I have the Tiles bar set to autohide and select to show a handle to be able to open it again (I can't move the mouse to the edge to show it since I also have Fences that uses this as an area to drag and scroll to more desktops), that handle gets in the way of other UI (e.g. scrollbar UI's top arrow at other windows)

it should be smaller I think and also allow you to drag it up and down to change location (changing bar from right to left doesn't help much, it still is problematic if you can't drag it up and down to relocate it [it should remember the new position and also see at startup if the saved position is out of screen bounds to autoadjust])

also I wouldn't mind being able to show the Tiles bar at the top of the screen