I am in the unfortunate situation where a colleague who literally sits at my bank of desks constantly triggers my anxiety.
This has progressed over time and can be anything from: commenting negatively on emails sent, passive aggressive responses to reasonable questions, and trying to micromanage the team - which sets my anxiety off.
At this point I should mention that this colleague isn't a manager and doesn't have any greater experience than anyone else in the team.
After speaking with a few others there appears to be a common theme arising, everyone feels the same.
I have raised this with my line manager but nothing has come from this, in fact I feel this has made things worse. Paraphrasing him, he said "I'll have a word with him [the colleague] but at the end of the day unfortunately you just need to deal with it; please push back to me if you start to feel stressed again". I've not mentioned it again. My line manager (who is based in the office) is retiring in 6 days (and counting). This is going to leave the team with a remote manager in the interim until a replacement is hired.
Hopefully there is some course of action I haven't thought of that I can deploy here.
I really enjoy my role, but if this continues I feel I'll need to start looking for a new role, for the sake of my mental health.