At work I have moved departments into a new department with my previous manager and 7 other colleagues also new to the department but have never worked with my manager before.
My manager is pretty strict about following particular policies to the letter and as a result there are quite a few differences in the way I conduct myself and how my colleagues do. It's kind of awkward as I feel like a goody two shoes because I know my manager I am trying to help my colleagues avoid getting in trouble with her and also because if I see someone do something wrong I have to say something because of the nature of the job it could mean knock-on effects on the whole team and we all share responsibility and would be blamed for not speaking up.
A few days ago I had to go into my old department with one of my new colleagues to do something. He was about to do something incorrectly; it's one of those things where I know logically it's just a policy being overly pedantic and cautious and common sense would say the way my colleague was doing it was most likely going to be fine. However, my manager was about to walk in and I know she would comment negatively on it so I said to my colleague "I think we need to do it X way" and they responded "no, it's fine" I then said "[manager] is coming in and I know she will want us doing it the proper way". I was just giving a heads-up to this colleague. Another colleague (my old colleagues from my previous department) overheard and also said "yeah, you need to do it X way". My colleague completely ignored us both and carried on, finished the task and then left. My former colleague could tell I was frustrated at not being listened to.
This morning I found out, via my manager, that my former colleague spoke to her about it and said this colleague wasn't listening to me. It was all said vaguely with no details but I know that this is the incident they are referring to. However, my manager has interpreted it as me not asserting myself well enough. For context I am quiet and kind of reserved, but I was speaking up and clearly telling my colleague why we needed to do something a particular way. I think the issue is more that my colleague was ignoring me and it was not really an issue with not me asserting myself enough?
What do you think? Happy to be told what I should do differently next time.