[Libreoffice-bugs] [Bug 110999] New: Pages with inserted PNGs without background show slight grey background in the PNG (PDF, Print)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=110999

            Bug ID: 110999
           Summary: Pages with inserted PNGs without background show
                    slight grey background in the PNG (PDF, Print)
           Product: LibreOffice
           Version: 4.4.3.2 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: andreas.buch at t-online.de

Description:
Tested with writer. 
When i insert a PNG file (on purpose, e.g. a scanned signature) without a
background, a PDF export file shows still a slight grey background. Also,
printings of the .odt file with colour show that grey background.
Even a PNG with a paper white background will produce that grey background.
That makes an signature looking ugly and non professional.

Steps to Reproduce:
1.Create a PNG(e.g. a handwritten signature) without background
2.Insert it in a L.O.writer page
3.export to PDF or print the page in colour mode

Actual Results:  
Instead of only seeing the signature alone, you will see the signature with a
grey background in size of the whole PNG

Expected Results:
I want to only see the handwritten signature 


Reproducible: Always

User Profile Reset: No, i happens on may three different Linux PCs

Additional Info:


User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101
Firefox/54.0

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