I’ve looked at everything I can to try and reproduce this issue. But even starting at N30 in the same aircraft, it works correctly. My mouse settings are:
camera/cockpit camera/“zoom cockpit view” mouse wheel up
camera/cockpit camera/“unzoom cockpit view” mouse wheel down
It can be really touchy when trying to set up those choices using “start scanning”, so you might use “select and input” instead.
Regards