I’m having this issue with a skeletal mesh as well, but I haven’t touched the blueprints on my level so far. It’s only happening after I export the mesh from Unreal, delete the old one, then import it again. I’m doing this to solve an issue with the physics asset that unreal generates for it, the first one is much too big, and it’s impossible to approach the mesh in game, but when exported then imported, it makes a correct physics asset, but the mesh blinks. I looked at the show bounds in the editor, but I’m not sure what I should be looking for. There’s a blue box around the whole thing, and a yellow sphere around the blue box.