After updating to 9.12 the red color is not present anymore. (Windows 10)
Developing works 100%, just the preview is not usable.
Regardless which files (old or new ones) of different camera models (Canon 5D Mark III, Canon 1D Mark III)
Color space is sRGB in file and setting.
Using "Before and after" does not have an effect as well.
Try resetting Camera Raw Preferences: How To: Reset Camera Raw Preferences - YouTube
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