Reviving this thread. This is still a rather prominent issue:
This happened once before the screenshot of the combat log begins, and then about 10+ times after the fact. It also managed to corrode enchanted armor, eventually, so I don't know if that's also intended as well. These are the Black Puddings under the Balinoks, and I only noticed this happening with the large ones.
This all also happened in rapid (and I mean
rapid) succession. Each touch attack was something like .5 seconds or less apart, until I killed the pudding, it would not stop.