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https://issues.apache.org/jira/browse/PDFBOX-5802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17835127#comment-17835127
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Tilman Hausherr commented on PDFBOX-5802:
-----------------------------------------
in PageDrawer after dispose() and before the mask is applied, a 85x85 rectangle
is white.
If we force the PDFBOX-5403 workaround (which is really just for the
PDFBOX-2171 file) when the mask is 1x1 AND the pixel is -1, then the 85x85
rectangle is black and the result is good and so is the PDFBOX-2171 file.
However...
This image most likely comes from "Root/Pages/Kids/[0]/Resources/Pattern/R24"
where there is a 1x1 inline image with content 00, i.e. black.
So maybe the real problem isn't in pagedrawer at all, it's the colorspace,
there's an error message, and it uses DeviceGray instead.
> Black rectangle over image
> --------------------------
>
> Key: PDFBOX-5802
> URL: https://issues.apache.org/jira/browse/PDFBOX-5802
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.27, 2.0.31, 3.0.2 PDFBox
> Reporter: Oliver Schmidtmer
> Priority: Major
> Labels: regression
> Attachments: AR24-0275VS-1_0001.pdf,
> image-2024-04-08-19-30-46-411.png, image-2024-04-08-19-35-43-407.png,
> image-2024-04-08-19-38-22-778.png
>
>
> The attached PDF has a black rectangle in the upper right, at parts over an
> image.
> This appears since 2.0.27, probably through the mask rendering changes in
> PDFBOX-5403.
> The image itself is rendered better after this change, still not perfect.
> 2.0.27+:
> !image-2024-04-08-19-30-46-411.png!
> 2.0.26:
> !image-2024-04-08-19-35-43-407.png!
> Acrobat:
> !image-2024-04-08-19-38-22-778.png!
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