After the latest iPhone app update (both phone and iPad) the view lock button, located next to the setup gear, has gone missing. This means I can no longer lock the screen to the multi-channel (Aux) view when the iPad is vertical in my stage stand. When the phone or iPad is moved to the vertical orientation it reverts to the "me-band" view. Since I switch between Qmix and On-Song, etc. which is in a vertical plane the loss of this button is a significant problem.