I've just noticed an issue where the bees will attack the first wasp properly when their attack is activated, but subsequent wasps are left alone. I'll fix that.
Sounds like your queen might be getting eaten by the wasp when you're getting kicked back to the menu screen? The healthbar seems to have a bit of a delay on it sometimes which I'll look into too.
Edit: Ah, yep, game over is getting called before it should for some reason. Will be fixed. Appreciate the feedback.