Before I deleted my account in November, I have reported to them a very severe form of memory leak that was caused by ad blocker(s).When you disabled your ad blocker, things became normal...but the background services they run via websockets was just insane lol.
As soon as you re-enabled your ad blocker, the same original memory usage returned.
Another memory leakage can be found via their message app; the more characters you type after a while, the more memory it would devour! I just couldn't continue my discussion with an HR during discussion about arranging an interview; we had to switch to email as it led both of us to extreme frustration!
It just not worth the effort anymore...not to mention the HR scammers that compete between them who's going to get your info or what other data they can extract from you.
Just delete your account; it's not worth it anymore...whatever Microsoft touches, it kills it in no time.