I just tried to make an online purchase using bitcoin, it didn't go so well.
I'm using Bitcoin XT version v0.11.0.0-2b918be and connect over tor. The problem was that my tor node was down when I sent the transaction. When I didn't receive confirmation from the payment processor I started to look into it and then restarted my tor node and wallet.
The problem seems to be that the wallet thinks that it was already sent the transaction, it says Status: 0/unconfirmed but I can't see it on any blockchain explorers.
Is there any way to cancel the transaction? If not, can I make the wallet retransmit the transaction, even if I have to go through the hassle of getting my bitcoins back from the payment processor, as the order has expired since long.