I know you said you don’t have any hide-when formula set, but have you checked both locations? I understand that you don’t have a hide-when in the target field, but what about the source field? Because these are RTF, a hide-when from the source could be copied along with the text. For example, does the source field itself show in read mode, or does it only show in edit mode? What happens if you change the fields from RT to plain text?