Gimbal Cover/Bubble confirmation from DJI Support.
I sent an email into support at DJI asking about the "bubble" and whether or not we can/should fly with it attached:
"Dear John,
Thank you for contacting DJI Technical Support.
With your concern, when you are preparing for flying, the gimbal clamp should be removed, but if you are referring for the Camera bubble cover, we best recommend not to remove it since that will serve as a protection for the camera from water sprinkle, dust, and other objects that may hit the camera in any case during flying.
Hope this will help and thank you for your time.
If you have any other inquiry in the future please feel free to contact us back anytime and we will be more than happy to assist you with your concern.
Have a wonderful day ahead.
Best Regards,
Myra
DJI NA TECHNICAL SUPPORT"