The item appears on my Completed Tab as "Purchased - Bid 0". That's right... bid 0 gold amount. Obviously something has gone wrong.
So now I am minus the gold I bid, which was a non insubstantial sum for my account, and I have never received the item.
On the same day a different item I tried to send to stash did not appear but did some time later so there seems to have been a glitch at that time.
Created a support ticket but after a couple of weeks of to and fro I received the answer that they cannot help me so I should just write up a bug report.
Decidedly unhappy. No gold, no item and now wary of the AH.