My former team had an "ux expert" who made ux templates for new features.

For years since he started his job, the team was told that there will be a first face-2-face meeting.

It never came to this point.

Instead all the team know about this guy is that his name is Thomas and that he does all the talk and decisions with our client without a word with the team, bringing their imaginations to li(f|v)e...

Genius! xD

No wonder the team got mad after some water had ran down the river.
At first they only questioned really poor design decisions.
But after a while the productivity of the team dropped, because they weren't willing to accept any of those design decisions.

Boi o boi.
Things escalated pretty well ;)