Image mirrored on main camera

[ZoomNut]

I underatand how mirroring the front facing camera for selfie mode so it looks more like what you would aee in the mirror.  But when i change the camera to the main camera on the back of the phone.  It stays mirrored.  This is not a natural or even desired. 

Why is the mirroring also applied to the main camera???  It makes no sense.

I feel that this is a valid BUG in the code of zoom app. 

The mirror ahould not applt to both cameras, only the front facing.

If the main camera also needs to invert, then there should be a separate setting that is not defaulted to mirror.