An error occurred while saving the commentSteveW commented
It's crazy that this doesn't work as it should. It makes trying to convince users to use Teams incredibly hard. You should be able to search for a team and it should be there. you could then expand the channels so they're all available. The search option is useless in its current form. Being a member of a lot of Teams put people off using it as they can't easily find the Team they need.
Please fix this ASAP