Normal. You can replace an alias URI with a new URI, even if it is the same URI. I consider it a bug, but CfB says it is a feature
James
Maybe i can't understand you properly, but i talk about two same aliases.
First is "lr127" (URI is "id:11017826896") and second is "lr127" (same URI "id:11017826896").
I wanted to buy one alias and spend 1 NXT, not 2.
But when i query:
http://node1.nxtbase.com:7874/nxt?requestType=listAccountAliases&account=11017826896I see only one alias "lr127". As expected.
My guess is that you clicked the button twice and accidentally made a replace URI with the second one. The first one created the alias, the second one replaced destination. Since it was from the same info that created it moments before, it replaced your URI with the exact same URI. Two transactions, one alias, cost 2 NXT.
James