I uncommitted from Biology but got invited to the private beta anyway. And now it appears under "current commitments" in my user info, even though it disappeared from there when I uncommitted
What's going on? Looks like a bug
Some sort of glitch allowed you to commit to the Biology proposal twice, so even after uncommitting, you still appeared as committed. I've deleted your Biology commitment, so it no longer appears in your profile or affects your number of available commitments.