Why some EAa opens second trade on a currency altgouh it has a opened trade on the same currency?

 
Hi all,

I have just seen that some EAs on the signal opens second  trade when it has an opned trade.

Forexample, An EA has EURUSD buy at 02:30. It sometimes opens second trade as EURUSD buy at 02:35 altough its first trade is open.

Why?
 
Probably because the EA has been coded to do that.