Seems this new version is much slower than previous one for changing Saturation and Temp, scene is not even heavy.
I found the same issue, the exposure slider gets stuck sometimes…
I had problems with the skybox brightness slider in the past.
The skybox rotation and brightness has been made much faster in the current preview version, that should be fixed. There have been no changes regarding the exposure or saturation slider, we do not know what could cause that observation.