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.
The operation of creating an initial alias, and the operation of changing an existing alias URI are both done with the same API call. It is the state of the alias being null or not that determines which operation is performed.
Petition the maker of your NXT client to add a time check to prevent this from happening in the future.