I'm using DJI GO 4 app (Version 4.0.2). When I first enter the the app in the camera mode, After zooming in on the map screen then switching to the fpv screen then back to the map, the zoom doesn't keep and the screen resets to a larger zoomed out "default".  Why won't it "remember" the zoom I set?

I'm using DJI GO 4 app (Version 4.0.2). When I first enter the the app in the camera mode, After zooming in on the map screen then switching to the fpv screen then back to the map, the zoom doesn't keep and the screen resets to a larger zoomed out "default".  Why won't it "remember" the zoom I set?