Sometimes my companions' facial expressions don't match what they are saying. Like when Piper says that this is the happiest she's been in a long times. There are times when she says this while making a face as if she'd prefer to jump of a bridge. I've also seen companions looking to either left or right when talking to you.
Final thing, I actually "broke" the relationship function with companions, happened several times. Well, not actually broke, but whenever I'd pick the relationship dialogue option, the camera angle wouldn't work. The companion would say it in my face with the "command" text displayed in front of the companion.
I save a lot, so these things are not a big issue - but I was still wondering if other people have had these problems and if there is a fix for this?