After exiting the tavern in White Orchard, I am accosted by the three peasants. When I engage in a fight with them, one of them (the rightmost one from the initial POV) is stuck standing up and does nothing. He has no health bar, but Geralt continues to target him even after the other two go down, leaving the fight in a stuck state. I can run away from the area to break combat, but returning puts me right back into combat.

Using the Axii sign to remove him as a combatant fixes the "stuck in combat" problem, but the peasant still just stands there with his head glowing after the fight. I'm concerned that this might bug up my game later.

Has anyone else seen this sort of problem?

You have an installation problem. Update your game and/or verify/repair it in Galaxy.

Running "Update/Verify" reported that nothing changed, but the problem stopped afterward. Thanks.