So, I worked away from our software teams and directly with engineers for a few months to examine the capabilities of a new piece of hardware we expected to integrate with. It wasn't necessary that I be shut out from all the other software projects, but my boss decided that I shouldn't go to them. When pressed, he said he didn't want the meeting to be too full.

I studied this hardware thoroughly, and even know the engineers who designed it personally. This is, in every sense of the word, my project.

... So when the product owner asks to meet to discuss another feature around it, my boss decides he should invite the rest of my software team to meet with the engineers. There's some non negligible engineering background behind the tool and associated workflow.

When asked why he invited them, despite me being concerned about lack of focus in the meeting, he said he "didn't want anyone to feel left out".

This is the same man that cost me an entire week of work (and is now costing me my time with the systems experts) because he doesn't want to hurt the feelings of my junior colleagues. He's shown repeatedly that he's just fine excluding me, but heaven forbid my junior colleague feel junior.

I don't think he'll ever realize how much he's playing favorites here. Ugh.