3D Prints - semi-transparency
If 3D printing a block with semi-transparency in their textures, such as vanilla Minecraft's stained glass texture, semi-transparent pixels render as completely transparent. Tested in Opencomputers 1.6.0.4 for Minecraft 1.10.2, running Java 1.8.0_111 (64bit) in Ubuntu 16.04 LTS.
Retested this issue with and without MCMultipart for Opencomputers 1.6.1.6. Also noted that while the placed 3D print is fully transparent where the original texture is partially transparent, the held view of the print is fully opaque. Example Picture Example .3dm File
Duplicate of https://github.com/MightyPirates/OpenComputers/issues/2938 - although this one technically came first, the latter has more information.