Confirmation on exiting Sailor bossfight

Well I know it's my mistake, but today I had one of my ships commandered by pirates, like so often before that. I entered the encounter to fight the pirate captain, waited for my charges to build up and accidentally clicked on the portal back to Kings March.

I knew that u can't reenter the fight once u left, but I didn't know that u also can't pay the ransom now anymore. So the only thing I was left to do was abandon my crew, so I lost my best ship with almost all lvl 10 sailors, just because I misclicked.

Please implement a confirmation prompt when clicking on the portal, because that's really frustrating :|

i lost my guys standing in the phys aoe slam, that i just didnt see, after phasing the guy... few days later still havent found level 10 shipping ppl ;/