Thumbnails don't show b&w previews

[KostasHarv]

Bridge 12 won't display properly some image thumbnails. So far is has to do only with b/w images; they are displayed in color. But it's not happening for all images; seems random.

Problem persists even if I refresh and purge cache.

[jbm007]

what type of files are these?

what OS version

[KostasHarv]

Windows 10, current Ps & Br versions.

Files are PSD. Ps settings: image previews Always save, PSD/PSBcompatibility Never.

Since you mention type, I saved the same file as TIFF and problem persists. Also, made a duplicate (did some editing) saved it as PSD, and still no correct preview. The problem seems to have to do with the specific file.

[KostasHarv]

Got it! Gradient map adj. layer is *not* reflected in the preview.

It wasn't like that always, and I've been using it for many years...

Suspected bug.

[ChristianMala]

I just made a post about it too. https://community.adobe.com/t5/bridge-discussions/ps-files-with-gradient-maps-are-generated-wrong-in...