Product and version
FileMaker Pro Advanced 18.104.22.168 (64 bit)
OS and version
Windows 10 (64 bit)
Popover Menu for editing a script step expands past maximum height of the screen.
How to replicate
When working with a script step that is at the bottom of the screen (when the script workspace is maximized) the script step options often cascade down below the start bar on windows and therefore cannot be selected. I have attached a screenshot of the Go To Layout step to illustrate.
Resize the script workspace before editing the script step, or move the script step up to edit it before moving it back to its correct spot.