I'm not entirely sure if this is a real bug, but it didn't happen before the latest patch, so...
Scenario: I would be wandering around the woodsy-areas doing my usual exploring thing when all of a sudden four or five bears appear in one concentrated area.
Expected behavior: I always thought the bears of Baldur's Gate were more of a loner-type animal than gathering in giant groups of five. Occasionally I had seen two bears together, but never more than that. At first I thought it might be a part of the monster-spawning-too-soon issue, but it only
happens with bears!
It's happened with black bears and brown bears. I don't remember cave bears being the same way, but I might just be getting them mixed up with the brown bears.
I suppose all else fails I could just slaughter them for experience, but... I don't know, five bears is a lot for one party to handle at my levels. I usually just go around them, and in a couple instances, they don't reappear after a reload.