I am facing some issues with the shadow-catcher and denoiser in Blender 2.79. Denoising doesn't seem to have any effect on shadow catcher shadow. If I turn off shadow catcher on ground plane the desnoising works well. But if it's turned on - the shadow stays noisy.
Also the shadow become much darker with shadow catcher turned on.
Am I doing something wrong? How do I get noise free contact shadow and lighter shadow like the left render?
Here is the .blend file of the scene in case someone wants to inspect it: http://pasteall.org/blend/index.php?id=48592
Will really appreciate any help.