It looks like those are related, yes.
I’ve put this new one on the list as RH-85397 BoxEdit: Floating Dialog Doesn’t Capture Object
Note that it’s no problem to get this panel to work fine in a floating container. When you run the BoxEdit command, that panel will open “somewhere”. If that is in a docked container, you can drag it out into the open to have it visible in a floating container. When you then close that container, and then run BoxEdit again, that floating container will be opened.
You can save this custom window layout so that if this panel gets added to a different container at some point for some reason, restoring that custom window layout will get you back to where you prefer to be.
-wim