It is currently abhorrent. They do appear to be updating regularly, but so much of the UX should have been fixed at the beginning.

- Messages don't get delivered for hours on mobile. - UX is so bad I don't think they are even dog fooding. eg, copy and paste a code block and it will capture a bunch of meta information - teams aren't followed by default, so half the team had no idea the data was there - this means nobody uses teams but chats, which are only recently pinnable (!?!?) - the pages, plugins and sharepoint files is great, but too restrictive.

Compared to Slack or Zulip, it is still very behind. However, once our 70k organisation moved to office 365 and started using teams, we sheepled and didn't want the team to use a fragmented tool and bit the bullet. So yeah. Watch out for teams.

Yeah, we use teams and have had none of those issues. In fact, I'd say it is better than Slack now, which is what we used before switching to Teams last fall. Plus Teams is in the whole Microsoft enterprise bundle already. Slack's biggest challenge will be Teams. Or their enterprise market share will boil down to, enterprises not using Microsoft, .. so Google...

You're describing 12 months ago Teams. It's come a long way.

Some of my co-workers switched to Teams. They show up as offline on Skype for Business.

I haven't moved to it yet because I require a chat application that works and allows people to contact me.

People showing up as offline doesn't affect the ability to send them messages, though.

Teams has it's own issues, but messages getting delivered isn't one of them.