You've worked with this person before and it wasn't pretty. They wanted everyone to be happy, so they let everyone else choose assignments first and took the leftovers no one wanted. They’re so helpful that they practically did the lazy team members' work for them. At the end of the project, they were exhausted and disappointed, as those other team members didn't put in anywhere near the hours or thought they needed to. As a result, not all the team's goals were met.
Welcome to the world of working with an INFP.