Yes. I had one of those. She lived in a world of her own and if she thought it, that meant it was reality. She didn't bother to actually check with the people around her to get their take on things. If she had a problem with you, rather than telling you outright, she'd complain about you to others and randomly take away certain duties as if you were incompetent to perform them, but never once would she come to you and say, "I feel like you're not understanding XYZ, let's talk about it".
It was a one-woman show with no communication coming in or going out! And it was horribly frustrating because you'd be sitting there thinking everything was fine, and then all of a sudden you're hit out of nowhere with snarkiness or the elimination of one of your job tasks. It felt very much like a betrayal, like you as a person were being betrayed, because she obviously had no intention of listening to you or even trying to get your POV.
You can't change people like this, they're emotionally immature/stunted and they just don't get it. But, as long as you have to work with this person, what you must do is become VERY CLEAR about where you stand, what your feelings are, and what you will and will not put up with. If you just "go along to get along", you will be marching to the beat of the boss's drum and you'll end up losing yourself in that. In a case like this, you really have to fight for yourself and do the work of opening the lines of communication, because the boss simply won't.
In other words, congratulations, you're now a therapist/parent figure AS WELL as whatever your job actually is!