If you can live with it that every creature with a bear animation won't drop its inventory when it is disintegrated, and that they give 100% instead of 75% XP when you kill them, do the following:
Navigate to your BG2 directory, go to scs II/backup/3530 and copy every file with a .cre extension into your override folder.
But before that make a backup of your override folder just to be safe.
That only applies to the bear component, if SCS II v14 and SCS v15 have other critical bugs it's best advised to heed the recommendation of DavidW.
10th
You are simply the Gods of This Game!
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