surface duo activates back pane in fold posture

[darrix]

Hi, my Surface Duo has a tendency to activate the rear panel when the device is in the folded posture, i.e., top screen facing me, bottom away from me. Does anyone else have this problem--i.e., does it sound like a device issue or a common problem? I've been able to work around it by activating the "sensors off" setting from the Developer Settings, turning it off and then on when done in that posture, but it's clumsy at best. Asking because I want to understand if I should try to get MS to replace the device.