Win 7 64Bit - GTX 650
Since there is on no roadmap, an indication that this bug shall fixed ... Here a reminder!
The ID pass has no grayscale values, that makes it unusable for compositing.
Any Workaround (e.g emission material override) is really a bit frustrating and time consuming.
It must be possible (however), to create a clean black and white mask otherwise the Cycles ID passes are useless.
Please Devs, fix this existentially feature!
PSD packed with 7z