Rep for Honor Hold, thorium brotherhood, cenarion circle, alliance vanguard (explorer’s league’s, frostborn, valiance expedition), reset for some reason i was exalted for a long time with them and now with this patch it reset back down to neutral with honor hold and randomly picked locations at others to be at. i am not at war with any of them. It was fine before pre-patch. but went to go look at a vendor and my reps reset as soon as i talked to 1 vendor.
This sounds like what’s mentioned in the second bullet here:
A situation where reputations which have a direct correlation on the opposite faction (such as Battlegrounds factions) are reset to neutral. A hotfix is planned for this issue and it should be resolved for players logging in after that fix soon. Investigations are ongoing for players who experienced the issue and need their reputations fixed.
So, it seems the devs are aware of this issue and all there is to do is wait.