[Libreoffice-bugs] [Bug 134736] Draw PDF export duplicates, resizes and misplaces images

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=134736

--- Comment #8 from Geza <agmba at freemail.hu> ---
I tried to export the enclosed ML3.odg and ML4.odg files and got the same
result as with LibreOffice 6.4.4.2.
I noticed however that the output is wrong only when the Archive PDF/A-1b was
selected in the pdf export dialog. Selecting another PDF/A version or
unchecking the Archive checkbox creates correct pdf files.

macOS 10.15.7
LibreOffice 7.0.3.1

While trying to reproduce the issue with small jpg images I also found that the
problem occurs only when the image rotated by 90 degrees (partly or in whole)
overlaps the other image.
Repro: 
1. place a larger (512px) jpg image in the center of the page
2. place another, smaller (256px) jpg image also in the center of the page,
overlapping the first one.
3. in the Properties/Position and Size set the rotation of the second image to
90 degrees.
4. export to pdf, use Archive PDF/A-1b
You receive a warning saying "Some objects were converted to an image in order
to remove transparencies, because the target PDF format does not support
transparencies..." Possibly the rotation created some transparent object from
the opaque jpg-s.
The resulted pdf will contain the first, not rotated image perfectly, but in
the upper left corner you will get the expected result (two images overlapping)
but in smaller size.
Disabling Archive or choosing another archive format will fix the issue.
Hope this helps.

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