For me, it's something that makes me lose trust in a therapist and/or feel shamed by them. An example of the one I sort of worked through with ex-MC is that he granted me two individual sessions when I was first dealing with the transference. At the end of the second one, he said his door was always open to me (meaning if I wanted to meet individually again). A few months later, I was really struggling with transference stuff and asked about having a single individual session. He said no. I brought up what he'd said. He initially just said his opinion had changed on it. A few (joint) session later, he eventually said he'd realized the offer was a mistake as soon as he said it. (And it was an offer that had given me lots of comfort at the time...) So that made me seriously wonder how much I could trust what he said in the future, and trust to me is very important in a therapeutic relationship.