I had a manager at work who seemed to really dislike me. I'll never know why. I always worked my arse off and I never said a cross word to anyone. I was quite new to the role although not to the organisation. And if anything I was probably overly compliant.
She'd completely blank me. On a Monday or after annual leave she'd go around asking everyone how their weekend/holidays were but blank me.
She tried to blame me for things I hadn't done a few times. She once rather aggressively asked me why I'd signed for something that I shouldn't have, confronting me with the paperwork. When I calmly told her that it wasn't my signature and I didn't know whose it was she huffed and puffed, no apology.
She gave others credit for work I'd done.
She was going through the office once with a drink and she looked as though she was going to spill it. I very kindly said something about being careful not to scold herself and she said she'd like to pour it over me. I just sort of half laughed thinking she must be joking but actually it was completely inappropriate.
To this day I'd like to know what her problem was with me.