I’m using the version downloaded today (v86.0.208087) and I can’t type in any days of the week i.e. “Thursday” or “tomorrow” into the Inspector. In fact, typing any alphabetic character is ignored. “3d” works fine though.
Typing “tomorrow” inline in the action itself is absolutely fine though.
One of the comments in the release notes was that they have removed a lot of the keyboard shortcuts, I was able to add it back in the system keyboard settings.
This thread is about typing things like “tonight” into the date fields and getting a useful date out of it–which will is fixed in r208187 (coming very soon).