For a long time, Microsoft Teams allowed you to select “Favorites” in your Team menu by selecting the “…” button, then selecting “Favorite”. The Team would appear in a “Favorites” section in Teams. This has recently changed to “Show” or “Hide”.It appears that Teams are not all shown by default. To show a Team (and prevent it from being hidden), select the “…” button next to the Team name, then select Show or Hide:
Hidden Teams can be found in a separate collapsed section:
