Shipping and Crew lost for no reason

Hey there

I just sent a massive shippment and my crew got attacked by pirates.

I then went ahead and clicked "rescue" because at this point this fight is super easy. I then entered the portal and arrived at boss location. At this exact moment I clicked LMB and accidently clicked the portal again.

This resulted in a loss of my entire crew and shipment. I wonder why the game doesn't prevent this from happening. I mean, I wasn't even in the arena at this time.

I'm aware this is the same with most (if not all portals). However usually u have about 6 portals and it doesn't matter if u click the portal back to ur hideout. In this case however u ONLY have 1 portal and you lose a lot for clicking it again!

Looking forward to a response.

PS: Overall I'm enjoying this season.