Character movement glitch

After using the bestiary my character moves independently of the screen I’m looking at. Still shows it moving but not centered in middle of phone and moves on the map. Graphics for whatever area I look at disappears as it probably would load them for the areas my character moves to and makes the scree I’m watching dissolve as it probably does while we all play but the glitch makes it apparent. When I type anything in chat the glitch goes away and character movement is restored to normal. This happened on 2 separate characters.