Can't leave a board in guest workspace

[Zaccea Mei]

I was admin in a workspace. I left the workspace. Now I'm a guest in the workspace because I'm still a member of the board. I can't leave the board even though there are two other members in it. One of the other members is an admin of the workspace, but not an admin of the board. I can't set them as admin of the board because I am not an admin on the board. None of us are board admins. The option to leave the board is grayed out. This is absurd.