Hello, I created two objects, one a wall and the other a translucent light texture. I aligned them for 3D using mesh. I place them close together (at the same coordinates) so they overlap. Sometimes this works and they look fine, but sometimes when I copy them, they start merging and a rendering error occurs. I don't understand why sometimes they overlap neatly and sometimes they crash. I've tried many options, but I can't figure out why they sometimes work fine and sometimes not. I'm sure there's no gap between the successful options; they definitely have textures on top of each other.