Thank you for your report. I was able to reproduce this issue internally and have submitted a bug report to that effect, for reference UE-20960. As we continuing to investigate a solution, I will keep you informed here.
Hi, I’m afraid for rendering efficiency reasons on mobile we only support the Receives Decal flag for dynamic/movable actors. If you set the sphere to be Movable it should respect the flag. On mobile we expect the flag mainly be used to prevent static decals projecting onto players.
Hi , thank you for answering the question. I actually found this bug because the decal was showing up on a movable static mesh and I didn’t want that. It works for “Skeletal” meshes but not moveable static meshes, moving platforms or physics objects that bounce around the level for example.
Hi guys, we fixed this issue yesterday with full support for filtering what objects receive decals on mobile, but unfortunately it’s too late to make it into 4.10 with adequate testing, but the fix will be in 4.11. We’re also rearranging our branches here at the moment so the fix isn’t yet available in GitHub. Let me know if you’re using source code and I’ll see if I can get it to you faster.