Different roll beweeen Portrait and Landscape

[Mauri59]

I hadn't used the mavic pro in over a year, and while checking to make sure everything was working properly, I realized that the horizon calibration is not right for portrait format, which is tilted about 10°. Even recalibrating the gimball, and the IMU, the problem persists. With the horizon fine in Landascape, I have to correct the roll it if I switch to Portrait. Any idea how to fix, or is it inevitable to manually correct the tilt each time when switching from landscape to portrait format? Thank You.

 

[Mauri59]

No reply after eight days....
Let's try to ask the question in a different way: would someone who owns a Mavic Pro 1, be kind enough to check if switching from Landscape to Portrait mode (it's not needed to fly the drone) results in having to correct the roll?