I created two equals aliases by url query. I press the Enter once, i don't press reload button.
And paid double fee.

First transaction:
http://node1.nxtbase.com:7874/nxt?requestType=getTransaction&transaction=18025872161896266439
Second:
http://node1.nxtbase.com:7874/nxt?requestType=getTransaction&transaction=13777821866514257534

I have two of the same aliases now.

Is it normal?

My local time is 5 am, maybe it's time to go to sleep? 

http://i.imgur.com/ziGHqFc.png