This thread is intended to account for the plethora of fixes that are listed in the Fixed forum as having been fixed by the BGEE devs and/ or Beta team. It will be a comprehensive list that organizes all of it into one tally for easier perusal.
I'll update this OP as the Fixed forum continues to populate...
Note that where mods are mentioned either permission by the original author was given to use the content or (most often) the mod was only used for pointing the way to the issue itself, and the solution was determined independently with the specific requirements of BGEE in mind.
Also note that this is not a comprehensive list of all things fixed in BGEE, just a tracking of all fixes that get fully processed through the Beta Testing team. After all the official baldursgate.com site mentions:
Over 400 issues from the original game have been found and fixed.