So, Humphrey is acting almost 100% normal again after his recent bout of stasis (one more day with separated litterboxes and food, and then I think I’ll feel comfortable de-compartmentalizing the buns)– he’s eating normally, drinking normally, pooping (99%) normally, grooming normally, binkying, playing with and grooming Otis…
But he seems to have retained the teeth grinding from feeling ill, and it’s making me very confused, because he otherwise does not appear to be in pain. : / It’s not the sort of loud and crunchy, miserable, eyes-squinting teeth grinding he did while he wasn’t feeling well, but more like he’s just… ocassionally chewing the air while doing other things. It’s bizarre. Maybe he’s always done it and I just never really thought about it. He’s also still doing totally normal tooth-purrs when I pet him. He also seems to be doing the weird grindy thing when he’s doing happy things– like, if I talk to him he does it, and if he’s been cuddled with Otis– but not always. It’s almost like he has a long-term “thank god my tummy feels better” tooth purr going on, but it’s just sort of… weird.
Anyone ever seen this before? I’m somewhat concerned, but without other symptoms I don’t know if I should be TOO concerned. Should I raise my concern level, do you think? 
Edit: For the record, I am planning on bringing Humphrey to his real vet for a routine physical once he’s been normal for a little while (I would like to avoid stressing him out right away again, though), so if it’s a tooth spur issue or something hopefully it’ll be found ASAP. Mostly just wondering if anyone else has a rabbit who does something like that….