"Mask with text" does not show video
I type text on a layer above a video layer. I click "Mask with text". The text goes transparent. Alternatively I can add a Track Matte Key to the video, with Matte as the text layer and the text does act as a mask. Why doesn't mask with text work for me?
I upgraded Premiere Pro today (13.1.2 build 9), have not been having any other problems.

