I have the same problem, it always crashed when hovering over Lightning and when I try to hover over Directional Lightning’s Movable propriety, I’ll try older versions of the engine for now, did it happen in 4.17 too?
I have the same problem, it always crashed when hovering over Lightning and when I try to hover over Directional Lightning’s Movable propriety, I’ll try older versions of the engine for now, did it happen in 4.17 too?