Out-of-gamut highlight discrepancy

(Arch) Linux 6.0

Nvidia GTX 1080: Driver Version: 525.60.11

When taking a look at a particular sample in mpv, I noticed that --gamut-mapping-mode=clip and --gamut-mapping-mode=desaturate were showing noticably different results despite --gamut-mapping-mode=warn not showing any out of gamut pixels. I have re-produced this with plplay on 030b59d1.

Example: https://slow.pics/c/vweQv079

mpv set to 1000 nits just to make it more obvious:

mpv --no-cache --no-config --pause --vo=gpu-next --tone-mapping=bt.2390 --gamut-mapping-mode=desaturate --tone-mapping-mode=hybrid --target-peak=1000 gamut.mkv

Sample here: https://0x0.st/o5LJ.mkv