I decided to start learning how to mess with Terrain in UE4 with the latest update, and everything was going fine. I closed out and returned today to find that my ball character was phasing through most of the level geometry. By running the erosion tool over the geometry (updating it, in a sense) it started working, but as soon as I launched the project, or saved, quit, and reloaded, the phasing problem returned. I have no idea what’s going wrong; here’s a gif of the terrain working in editor and not working when launched:
Any help would be much appreciated.