So I've been working on a map recently using the Portal 2 Authoring Tools. I've been working on trying to make moving clouds, so I have some transparent materials I've created, and I've gone through the material creation process (converting into .vtfs, creating .vmts, etc). The texture thumbnails come up correctly in the texture browser, but when I apply them onto my func_brush (the brush I'm placing in the skybox to have the clouds on) they end up making the brush appear as if I had wireframe viewing turned on. Anyone know how I can fix this? It would be greatly appreciated.