I trade Bitcoins/Altcoins using various exchanges for quite a while now, and never seen such a thing. I understand that to you I might sound like I am not telling the truth.
But it did happen. I had NO BTC in my balance, I only had Bitcoin Scrypt, once I saw that I had BTC in my balance, I checked the BTCS/BTC market, and I see -> my sell order is bought by some one <- And yes it was MY sell order......
Then after browsing through the site my BTC balance was gone, and my sell order was again open........
It could be that the page at that moment showed wrong information because the page was not updated/refreshed correctly.
But as I said, it was very weird, never seen such a thing.
Again, it would have shown up in the Your Trades table if this was true, so I'm afraid you've got it wrong. If it was just in the Recent Market History as you said, it does not mean it was your trade as multiple people can have an order at the same price. I can tell you that it is is simply not possible for a trade to rollback and we have never reversed a single trade.
A surprising number of people get confused like this and write things without being sure that it happened.