Lost entire crew of X Mappers due to accidental exit in Sasan fight

Situation: Upon entering the Sasan fight I accidentally clicked on the single portal causing my character to exit.

Result: Lost the boss instance (I wanted to engage the fight). Lost an entire crew of Level X Mappers (which are very rare).

Suggestion: Please add portal exit message 'are you sure you want to exit' in the Sasan and Admiral Venarius fights.

Commenting for visibility. Same thing happened to me.

Bumping the post, it's ridiculous basically worthless heist contract warns you when you want to abandon it, but no such warning shows up when rescuing workers worth possibly dozens of hours of gold farming and re-rolling.