The latest version of MDP (2.267] provides 2 methods to access the 'more' menu with the latest version of iPadOS. It solves the issue in PLAY mode, but not DESIGN.
There is a better approach! The touch range to activate Apple's 3 dots is narrow enough at the top such that if 'more' is selected by touching just below the letters 'more' (in the black area) it will drop down. It may take a little practice, but it works in both Play and Design mode.
Try it, you might like it