Continuing the discussion from Companion App is auto rotating upside down?:
I only installed Zwift today 6 May 20 and found the companion app on my Galaxy S10 plus phone flipping upside down no matter which way in landscape my S10 was placed. I had to complete a ride by rotating my head to see the app images.
The manual workaround after the ride was to disable the auto rotate option in the Samsung Galaxy S10. It does seem strange the app does that on a brand new version of the app downloaded and installed the same day I first used it when apparently earlier posts suggest the issue was fixed with an earlier update.
Maybe I will try the reboot option too but for now, I know disabling autorotate prevents the issue. Sounds like a bug to me though.