https://bugs.documentfoundation.org/show_bug.cgi?id=169346

            Bug ID: 169346
           Summary: PNG with transparent background inverted in print
                    output
           Product: LibreOffice
           Version: 25.2.6.2 release
          Hardware: ARM
                OS: macOS (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Printing and PDF export
          Assignee: [email protected]
          Reporter: [email protected]

Description:
When I add a PNG image with transparent background (alpha channel) and black
content into a LibreOffice document (e. g. Calc, Impress, Writer) and print
that document, then the PNG image is printed with inverted colors.

Surprisingly the print preview (icon with document and magnifier) shows
everything correct.

Steps to Reproduce:
1. Create a PNG with transparent background and black elements in it
2. Add the PNG to a new Writer document
3. Print the document

Actual Results:
The PNG is printed with inverted colors.

Expected Results:
The PNG is printed as shown in the LibreOffice's print preview and edit view.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
Maybe related to #126876?

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