Yikes, just saw this thread, sorry for the late response.
There's a few other issues that were still there on my last run with v15:
1) Minsc's Base THACO always becomes insanely good following the Minsc/Boo quest. If I recall correctly, I did it when he was level 9 (base THACO 11, I believe) and after the quest his Base THACO became 7. You can find old threads where people yell back and forth at each other about whether or not the problem "fixes itself on levelup", with some saying yes and some saying no. The truth is, they were both right. Saying "fixes itself on levelup" implies that the problem is fully corrected next time he levels, but that's not quite the case. What happens is that his base THACO won't improve on levelups until it would actually become better than the Base THACO 7, so, basically in my game, the THACO stayed the same from level 9 all the way until level 14, at which point it finally improved to 6. So the bug gets -less severe- with each levelup, and eventually after four or five levelups the bug goes away, but that can take quite a long time.
2) Noted this in the G3 Fixpack documentation, dunno if this is what has been discussed in this thread already:
Unfinished Business v15: The 'Minor Dialogue Restorations' component will corrupt an area script at the de'Arnise Keep, causing issues ingame or causing other mods that alter this script to report errors or fail to install. A fix has been provided to the Unfinished Business team and will be included in the next UB release.
3) Most people probably won't run into it, but maybe you want to squash it on this run: During the extended Illithium quest, If you visit the Temple Ruins but don't meet Unger's brother while you're there (he's at the dead end of a hallway you never really need to go down), and then you go back to Unger in the Copper Coronet, it starts Unger's initial line in a conversation with his brother as if the brother had been rescued, but then aborts because the brother -isn't- there. I discovered it because I reloaded a save in the middle of the temple ruins, thinking I'd already talked to the brother by the time of the save, but I hadn't. I can't swear to the following, but I think if you make this happen, it breaks the quest altogether: if you talk to Unger and get that behavior, go back to the brother in the Temple Ruins and send him to the inn, and then go back to Unger, Unger won't start up that conversation again.
I -think- that's all the bugs I've discovered or heard about over the last few months. Hope it helps.
Qwinn
P.S. If any of these were already fixed in the v16 beta, sorry bout this, I never saw a fix list for it so I had no way to check if they were already taken care of.
P.P.S. Yet another +1 in favor of ditching the Grove detour.