So, it looks like the ProgressBar only displays percent or text if it is a circular progress par, which is not reflected in the documentation.
No big deal, but it did cost about 20 minutes of digging around to figure out what I was doing wrong. Probably worth updating the documentation to reflect the current state of the ProgressBar, since it doesn’t even mention the circular progress bar as a thing.
Better yet, I’ll update the LookAndFeel_V4 linear ProgressBar to display the current progress so it’s consistent with the others. Thanks for reporting!