Created attachment 69 [details] Posters on the right have 0-alpha black backgrounds, which show as 100-alpha black. Additionally one is z-fighting but that might be an unrelated bug. As in the title; if you import a .png with transparency in it, the transparent areas will show as being 100% opaque on the wall. The alpha displays correctly on the UI icons for the poster. The formerly-transparent areas will often show up as white, making this not immediately obvious, but it means you can't stack skewed posters without it looking gross.