Just had an epiphany -- seems this kind of thing is happening also, intermittently, with controls being disabled. Well, the forms have a lot of rules and formatting and views (they were some of the first forms I created many years ago, and the design isn't very efficient). When network traffic is heavy, or when browsers are slow to load, or some kind of timeout occurs – maybe all of the form’s formatting rules are not getting “read”. This would explain the inconsistency of the controls being disabled or users landing in the wrong view, and why I can’t find anything wrong with the form’s rules, and why it’s cropping up in SharePoint Online, where I assume there is a performance hit compared to on-premises.
Susan Pierce
University of Texas at Arlington