AH dissapearing gold after buyout

Not sure if its bug or maybe some blocked featuer but I have noticed I couldnt buyout large amounts of gold like 100 * 1k of gold perf 1 unit. It didnt show up that auction was completed after I hit confirmed. However, when I created new auction suddenly 100 Bs disappeard from my account. I though that auction with gold completed, but there was no gold in stash/characters :(