Two of them, both are not very extrem.
Positive one first:

Meetings were usually not dead serious (unless there was a problem), everyone just joked around a little, made their actual points and got back to work.

Now the other one:
A client's QA staff commented "this bug is still occuring" on 5 tickets, without checking if they ever deployed the new release candidate.
They didn't deploy the new RC, so of course, the bugs couldn't have been fixed on their side.