I am running the latest iOS and Photoshop. have disovered that when selecting more than one image to move, they dissapear from the screen. I can bring them back by toggling the view option of the layer from which one of the images are in. this is when the mouse/Pen are used. if using the cursor buttons, it doesn't happen.
Please provide more detail about how you are selecting more than one image to move. I have to assume you mean you are selecting multiple layers, correct? Or do you mean you are creating multiple selections on a single layer?
If you can tell us more about your work flow, maybe with a screen shot, then we can help you more efficiently.