Recently, during a very pleasant endeavour at one of my customers, I got involved in a curious case I would love to share with “the world”.
All administrators were able to see (nearly) all teams in the admin center. With one exception. There was a certain team (which was created exactly the same way as all others), that certain admins were not able to see.
The basics were all checked: permissions, powershell, graph api, … I even opened a Microsoft case for it.
After some troubleshooting (alas, without the help of MS Support), i figured out a work-around.