Denoising not working if we add a light mixer render element ..

Corona version :

Corona version: 1.6 DailyBuild Jan 11 2017
Full-speed, Non-debug, MaxSDK 2016
Build timestamp: Jan 11 2017 21:07:14
Defines: Wide RGB

Description : The denoising feature doesn’t remove the noise if there is any “light mixer” element in the render elements.

If I disable the light mixer element and render the scene again, the denoising becomes effective.

Hm, I can’t reproduce the issue, could you please send us a scene where this happens?