Maybe the form is not "done" yet but PS programmed just enough to get the 1/3 COVID to work?

Did you try going to the field you want to enter data into and right-click to cross-reference to sources?  I wouldn't be surprised if the entries go on the bogus 8915-E somewhere.  I'm kinda surprised that's the best method they could come up with after 5 extra weeks of programming time.

Sorry I'm not much help.  You might need to call support. 😞