When working on an an action that is on the right side of a branching flow I find that the dynamic window opens on top of the action I am working on. Escape and hide do not seem to close the pop up and so I have to click outside the action and back in.
It would be really useful if power automate could check which side of the screen your current action is displayed on and display the pop up dynamic content window on the opposite side. As a work around I currently have to move my action to the left branch to amend it then move it back to the right when complete. No amount of screen zoom etc will fix the problem.