When you search for a team, then click on a team, the navigation pane does not move to that team so you can't see the channels. You still have to manually find the team in the list to see the channels within the team.
Clicking search result should make the navigation pane jump to that team and expand it to see the channels.
Rob Kalis commented
I Agree. It's confusing beacause as admin I have more than 90 Teams. Via the search you can go to the channel your looking for. But hopping thru channels is only possible in the settings menu.
Leo Hart commented
That work around adds two clicks but it does work.
I Feel your pain but have a workaround: From search result, click the main channel title then click ... next to main title; now you see the channels tab; Click on this and you get a view of all available channels.