I've already noticed this bug on my old iPhone 7 Plus and it stays on my current iPhone X. In the area of wallpapers selection, when choosing one, I have the option to choose between still / perspective / live photo. If I select "live photo", the wallpaper continues in perpective. I notice this by moving the device lightly. Sometimes I can even notice this even when I select "still"! It seems to me that this gets worse when the battery is at a lower level (I do not know what the relation is). Did anyone else notice that? It is an old bug that has not yet been resolved. And I think it drains the battery.