elementaryOS 0.4.1, GTX980ti
Broken: 2.79.1, 58a15b2
Short description of error
The Keying Node does not key colors with values above 1 correctly.
I noticed this behavior with badly lit greenscreen footage, which I had exported as EXR with Linear ACES colorspace. No matter what I try, all areas which are overexposed, with color values above 1, are not keyed at all.
Other keying nodes, such as the Chroma Key, work just fine.
Exact steps for others to reproduce the error
I have attached a file with a very simple example. There are 2 colors, one with green channel at 0.95, one with green channel at 1.05. The darker one keys just fine, but not matter how I set the key color or clip the blacks etc., the inner square simply doesn't key correctly. If you try with the Chroma Key or any other keying node it works just fine. I guess there is some internal clipping happening in the Keying Node. But since we are working in a linear color space this really should not be happening.