I have owned two Theta Vs since launch and until now top/bottom correction has worked great. Recently however (and I am sorry but I am not sure at which version this began, app or otherwise) if the camera is held or mounted upside-down the top-bottom correction results in an extremely shaky image even with no camera movement. It is worst when the top of the theta points exactly downwards, but the shakiness begins even when it is tilted below 90 degrees. This occurs when stitching in camera, stitching in iOS app, stiching on Mac and PC apps. Anyone else find this?