I have only barely used the CPR before, but I seem to remember it working fine. Now I'm set to enter some discount codes, but don't want them to apply to sales items. I figure I could solve this by either setting the Special Price attribute to be used in CPR. Or put them into a separate category and filter that.
Problem is; whenever I try to select a category, the entire page freezes. And I can never get any filters for attributes. (See screenshots).
Anyone got any ideas as to why these may crash?
Edit: I see this is an official bug: