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Confusing Advanced History Thumbnails


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Choose Advanced view in the History panel. Open a color image.

Draw on it with a paintbrush using white paint (thumbnail 1 below).

Add a Black and White Adjustment layer (thumbnail 2 below). Note that the thumbnail is still in color.

Add a pixel layer above the B&W Adjustment (thumbnail 3). Note that the thumbnail is now in B&W.

Paint with black on the new pixel layer (thumbnail 4).

Thumbnail 1 shows the result of painting with the brush. Why doesn't thumbnail 2 show the result of adding the adjustment layer?

image.png.695c22c67bdcfac15b83bb75bfc51a37.png

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-- Walt
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On 3/8/2019 at 9:21 PM, walt.farrell said:

Thumbnail 1 shows the result of painting with the brush. Why doesn't thumbnail 2 show the result of adding the adjustment layer?

It didn't show the thumbnail in black and white when you added the adjustment because you haven't moved the sliders before adding a pixel layer  - if you had done so you would have seen an additional step labelled Set adjustment parameters and the thumbnail would should a black and white image immediately - so it only updated it after you added a pixel layer. It should however have been updated as soon as the adjustment dialog was closed/exit from screen since its default values do perform a change in the image. There's also similar issues with other adjustments filters. Issue logged. Thanks for your feedback.

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