See the attached screen shots and look at all the information vanishing when switching from portrait to landscape on the Honor magic v2 (a £1600 phone). It does exactly the same on the Samsung galaxy fold 5 too.

You have an issue with your reactive design not adapting properly to anything not in a 16:9 aspect ratio.

See the images attached taken moments apart, one in portrait and one in landscape. The RM app is the only app out of the dozens ai use daily to have this fault, so it is not a hardware issue, it's bad coding and needs debugging. Obviously none of your devs have debugged on a foldable.

Regards