The in-game map preview is not generated if the map uses custom textures.
This means anybody who joins the game lobby immediately leaves because they think the map is broken / low quality.
Just to clarify, I know how to create the preview image for the map vault and the 'Find Games' list (mapname.small.png at 100x100) but the in-game map preview is not generated.
What is the point of going through all this effort of making new maps with custom textures if ppl just leave the game lobby because the preview looks broken?