Thanks for the debug suggestion, I very appreciate it! I used Unity for my game and my current approach is:
- Check canvas height and record the value down.
- Move the wallpaper's anchoredPosition from current anchoredPosition to the recorded value. So for example: the canvas height is 1080px and the wallpaper's initial anchoredPosition is 0px, Then the wallpaper will move from 0 --> 1080px above the initial position.
This should work no matter what resolution on the height of the screen is but somehow it still occur on your side. I'm thinking is the width of the screen affecting the anchoredPosition calculation too since you are playing on 720x1080. Anyways, I'll take a look at that and thanks so much again for playing and giving out suggestions for improvements!