Title
Form Component behavior issues in Tab Multi Column LayoutDescription
Cause
The issue is the fields get moved around when using the show/hide options and ASP.net doesn't like that and throws an exception which in turn makes the form crash causing what we are seeing.
Resolution
We have logged this as a defect (TF00259987) but will take some time to fix.
We do have a workaround. If you use enable/disable on the fields instead of show/hide, the fields will stop moving around, and the issue goes away.
Defect ID
The issue is the fields get moved around when using the show/hide options and ASP.net doesn't like that and throws an exception which in turn makes the form crash causing what we are seeing.