This also happened to me - this thread saved me a lot of trouble. Thanks for posting this!
Regarding "slowreader" comment about showing the source, my QBI Deduction Summary (which feeds Form 8995) does indeed show a source of this 199A dividend. Unfortunately, it erroneously pointed at a K1 that I'd entered, instead of the 1099-DIV where the number actually came from.
I tried everything experimenting -- I deleted my K1, Form 8995, and the QBI Ded Summary - TTAX still showed the source being a K1 (unnamed) that didn't exist. This one wasted a lot of my time...
