Can't end patrol

[rjbudz]

Hi all,

I've been quite successful sinking 6 ships on the way to Bismark Sea, my assigned patrol area. I've reached it but can't get the game to acknowledge it and mark the patrol as complete (Yellow star turn to gray).

Anyone know why this is and hoe I can "fix" it?

I'm assuming if I return to base as-is, I've failed my mission.

Thanks!