I have BMW OEM Sat Nav locking cradle on my bike.

I recently had an instance where the Chigee fell out of the locked cradle when I hit a particularly large pothole. Quite remarkably, I caught it as it bounced off the tank so damage minimal.
Has this happened to anyone else?
My mate has a Carpuride 702BS and comparing the indents on the Carpuride where it secures into the cradle it looks better designed with 'sharper' edges to the indents than on the Chigee.

I recently had an instance where the Chigee fell out of the locked cradle when I hit a particularly large pothole. Quite remarkably, I caught it as it bounced off the tank so damage minimal.
Has this happened to anyone else?
My mate has a Carpuride 702BS and comparing the indents on the Carpuride where it secures into the cradle it looks better designed with 'sharper' edges to the indents than on the Chigee.