I started a MP game playing as a champion, with the other player as normal (with shared unit control). At first, I was able to see his resource stats and use B and S hotkeys to select the build menu and research menu, etc. And on the galaxy map, there was a message saying "viewing <player>'s UI".
Then somehow it reverted and now I only see the champion UI, and have to manually select his command center, science lab, etc to get the menus because the hotkeys no longer work. I'm not sure how or why it switched. Is there any way to control this?
Thanks!
Edit: I did look through the controls screen and saw a "switch back to local player's UI" command, but not one to switch to the not-local player's UI. And I'm certain in any case that I did not ever press that key combo in the game, when the UI switched.