Quote Originally Posted by rrayy View Post
except that is not the case as WoW has been 64 bit for years
Except you're wrong; https://www.wowhead.com/news/updated...28379#comments

quote from a few comments below this one:

Could be there was none to buy 4,294,967,295 highest 32 bit unsigned number.
Now lets say there was 20 of an item up and 3 people tried to buy 22 of them at the same time and they " did" buy them. We now have -46 or 4,294,967,249
So, it is definitely a 32 bit cap issue, someone literally said they couldn't post their auction. We may be 64 bit on the client side, but on the server side where the AH data is stored, and what is tracking how many of an item there is, it is(or was if blizzard fixed it) perhaps a 32 bit cap issue.