the old member will self promote himself to be team lead. He decided to stop doing hand-on work starting from that day and start to manage others.

Even though the project manager does not agree to give him the team lead authority. I noticed this in two situations, one is a white guy, another is a Indian guy. For that indian guy, it is bad. As soon as he promoted himself, he claimed TEAM LEAD title to external teams. He started to said bad words about those Chinese members to the project manager. For his own indian new team members, he always said they are very good even though they can not deliver work.