I am working on a small mobile game. I have the environment setup with a single static skylight with no shadowing (Cast Shadows = false) and a single directional light ( Moveable, Cast Shadows = true, Cast Static Shadows = false, Cast Dynamic Shadows = true) attached to BP_Sky_Sphere from the engine content. The shadows on mobile look acceptable on Samsung Galaxy S8 Active until the player looks toward the directional light source then the shadows disappear completely. Turning away from the light, brings the shadows back.
Below are images of the shadowing taken from the same run of the game and slightly adjusting the viewing direction of the player.
The difference between the two screen shots is that second image has the viewing slightly looking higher (more towards the light source direction).
Any ideas on what is going on here and how to stop it from occurring?