@boW-2 and @shawnW-3 we've noticed this ourselves from time to time but haven't been able to identify the steps that produce the issue. I just tried again myself now with a new Form, trying lots of variations of switching back and forth between Expert and Normal mode after making changes, and haven't been able to reproduce the problem. (Seeing the issue doesn't help identify how it arose.)
If you notice what actions produce the problem so that we can reproduce please open a new thread and share the details and we can take it from there.