I've just updated to the latest version, and it still does it.
I sent you a link to an image.
According to command-line ImageMagick it's got a colorspace and colortype of Gray / Grayscale. But it also has an RGB ICC profile.
In Adobe Bridge, it just shows the image has a colour mode "RGB", and has that Adobe RGB 1998 profile, no mention of Grayscale.
I think that what I'm seeing change on a breakpoint is not actually a conversion to greyscale, it was a red herring.
I think the actual problem is that these greyscale jpgs have ClassType set to "Direct", but when they are written out, they end up with ClassType set to "Pseudo" for some reason.
I sent you a link to an image.
According to command-line ImageMagick it's got a colorspace and colortype of Gray / Grayscale. But it also has an RGB ICC profile.
In Adobe Bridge, it just shows the image has a colour mode "RGB", and has that Adobe RGB 1998 profile, no mention of Grayscale.
I think that what I'm seeing change on a breakpoint is not actually a conversion to greyscale, it was a red herring.
I think the actual problem is that these greyscale jpgs have ClassType set to "Direct", but when they are written out, they end up with ClassType set to "Pseudo" for some reason.