Team member invitations to sandboxed teams are not invalidated consistently (v2)

As per our email conversation on ticket 2527, I am giving you a proof of concept of my claim. 1. I have a sandboxed team in hackerone,named movielee. 2. The manager of that team (@haxorsistz) sends an invite to => ██████████ 3. The link which I received on email was => https://hackerone.com/invitations/6fbca8af2f861c8174136f97ec51fde6 4. I logged in from another researcher (@geekboy) account and visited the link.Accepted the request. 5. Now I can see that invitation is still live. So, a member of any team can pass this token to other people and they will be added to the team.I used this token 3 times and it's still live.