Bug report 13.1 ProRes
Since 13.1 exporting from ProRes 422-Footage using Maximum Bit Depth results in too high brightness. (Windows)
I have the same bug, when encoding "from" ProRes 422 HQ and "lower".
Effect seems to be related to https://forums.adobe.com/thread/2612761 , at least it does look like the same problem to me.
and it's not related only to ProRes. DNxHD mxf also.
by disabling maximum bit depth, your luma/color will remain unaltered
it's related to this?