JPEG is not officially supported, only through an AXE module (skids modserver)
But yes, I ran over this problem as well. But I'm not surprised, its the same issue as with JPG: If you want to have transparency etc correctly, you have to use loseless as such informations are broken otherwise.
But yes, I ran over this problem as well. But I'm not surprised, its the same issue as with JPG: If you want to have transparency etc correctly, you have to use loseless as such informations are broken otherwise.