Two things come to mind when I read your post! Both of which I’ve had experience with, in my buns.
Firstly, How old is your bunny? As well as the breed! Are your floors hardwood, tiled or smooth carpet?
I ask this, because your rabbit could have e. cunilli (all rabbits do… but sometimes it stays dormant, sometimes, with age it becomes active) I first noticed the symptoms arising in my rabbit when he couldn’t stand on hardwood floorsand would hover around my feet for support. The next thing I noticed was a reluctance to let me see his left side (which developed an eye problem due to the situation) however, it is treatable! Not curable, but treatable and it isnt too expensive. .
Next, how often is your rabbit in a cage? Is your rabbit over weight? How old is your rabbit?
I as because older rabbits have severe muscle deterioration when not active enough. You often see in caged rabbits that their leg muscles are weakened and therefore resemble a lameness. This can be fixed with exercise and I would recommend purchasing some joint support supplements (theyre sold in little tabs; some bunnies like to eat them, some don’t but mix it with a little unsweetened apple sauce, and its game time)
Over all, if youve seen no aggression or depression in your bun, I think you’re okay! Just get it checked when you’re at the doctor next time!