Bad colors when using default chroma subsamspling encoding

[seppiola]

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Bug

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I would like to confirm this is an actual sunshine bug before reporting as an issue, and not dependent on client (moonlight).

When streaming using default preset colors are raised as if too "bright", with poor contrast. If I enable 4:4:4 full chroma encoding colors looks fine, which is unexpected, there should't be any such difference for general colors when using default 4:2:0 subsampling.

Here is a couple of screenshots taken from a moonlight linux client (issue is also present on android but colors looks off in a different way):

[seppiola]

I tried it on SteamOS and this issue doen't seem to be present using moonlight flatpak package.
Probably something wrong with moonlight on my OS instead and possibly android.

I'll report this on moonlight repo but leave this open in the meanwhile.