Is this Bug still in the Game? I cant spare him no matter what I do.

please help i cant let a colorjak die no matter how carbon they are

Mine is gemson

so I was on the boss in the daycare level and had gotten to a secret level, after I beat the secret level I returned to the boss for daycare because it was unlocked, so I play the daycare boss fight so I can progress further and like 15 seconds into the boss fight I get kicked to the main menu...

I need to know my fellow chuddies.