Operating system and graphics card
Intel i5 4670
Short description of error
Unable to get correct Image/ Alpha out of the ID Mask node while compositing whilst trying to seperate objects or materials using the pass index / Id mask
Exact steps for others to reproduce the error
simple scene setup with two objects with different materials and pass index 1 and 2 (enable material index /object index under rederlayers --> passes)
go to compositing, set up as shown in the image
Im not quite sure if its actually a bug or not but id would still be quite nice to know why that isnt working as usual.