I have a form that has been used about 2800 times. A user just came to me today saying she experienced a problem with the form. The formatting rules suddenly didn't respond, while the corresponding validation rules did. She provided me with the following image:
What should have happend is this:
When she cancelled the form and started a new one the problem was solved.
I have never seen this problem before. What could have caused this formatting rule hiccup?
ok, it's really simple and nothing what shouldn't normally work.
if that happens regularly then I would watch developer console for errors reported. there might be millions of reasons, hard to guess a proper one.