The following was confirmed by at least three people and affects Version 1803+NVDA combination at the moment:
Issue: when trying to change product keys, NVDA does not respond when you try to tab through the product key entry screen in Version 1803.
Steps to reproduce:
Expected: you can tab through this screen.
Workaround: restart NVDA right then. After that, you’ll hear NVDA respond as you tab through product key entry screen.
This is a rather serious regression and I’m about to file a feedback about this – once it is filed, I’ll share the short link so folks who can access Feedback Hub and upvote this can do so.