What really grinds my gears is Microsoft replacing native apps with Electron. Trillion dollar company who is so cash strapped they have no choice but to punt to the easy development path.
Like yes, I'd prefer native and MS can certainly afford to take that path, but they can't even be bothered to make sure that most of their Electron apps land on the upper half of the quality spectrum.
Only if you don't compare it with any native or quasi native editors like Notepad++ or Sublime text. And Emacs has been cross-platform for decades.
Regardless, there are a bunch of new visual glitches in the release, with regressed performance all over the place.
But I still have to open a modal just because I dragged a meeting from one time to another. This version of Outlook is, slowly, getting better though.