HDR image viewing broken since v136

[firefoxbroken]

HDR image appears crushed/dark since v136. No issue in chrome/edge/opera or firefox v135

EG: https://slow.pics/c/UaWl9KyR

[Anonymous]

https://www.reddit.com/r/firefox/comments/1j4dk7v/viewing_hdr_images_broken_after_updating_to_v136/