Did you make the mistake of enabling the "new" (web-based) outlook? At least AFAICT, the "classic" one hasn't regressed much/at all

I used legacy relatively happily when I had a windows laptop, but recently switched to a MacBook and it either forced migration or was already the new version (don't remember). The macos outlook is a bit borked too. Beyond the typical level for outlook. Can't create or edit rules anymore that save to server. Need to go into the web version via browser.