I tried upgrading one of our solutions from 9.6.X to 9.7.0 and when I hit "Add new field" inside a Product Category the form window starts blinking uncontrollably and the input fields constantly refresh (go empty)
Just wanted to let you know ;)
Update from author: The page spams the EcomProductCategoryField_Edit.aspx?IsAjax=true&cmd=GetSystemFields request (see attachment)
Best regards,
ArnĂ³r Geir