https://bugs.documentfoundation.org/show_bug.cgi?id=106573

Regina Henschel <[email protected]> changed:

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--- Comment #2 from Regina Henschel <[email protected]> ---
Created attachment 131944
  --> https://bugs.documentfoundation.org/attachment.cgi?id=131944&action=edit
SVG with external transparency

I think, that there is no error. With the transparency in the image properties
dialog you define the background behind the image. If the image itself is
totally opaque, you will not see this background. In file format that is the
attribute draw:opacity for a solid transparency and draw:opacity-name for a
gradient transparency. The SVG picture in the attachment has a solid green
background with a gradient transparency.

To see this background, the image itself needs some transparency. That can be
parts of the image by e.g. alpha channel, or you set the whole image to some
transparency. That is done by the transparency field in the general picture
dialog (the dialog with the color filters and gamma setting and effects like
"Pop Art"). In file format it is the attribute draw:image-opacity.

The SVG in the attachment has a draw:image-opacity of 40% (=60% transparency).
That makes it background visible and you can see, that the background has the
filling which I described above.

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