Image cropping changes when generating pdf

When converting a text document created in Libreoffice Writer to pdf I find that the cropping of images in some cases has changed. At least two images have been cropped less laterally in the pdf. The aspect ratio is unchanged, i.e. the horizontal scaling of the images has changed.

I have repeated the file conversion in order to check that I had not forgotten to save my latest changes to the document before conversion. However, the new pdf looks exactly the same as the first one.

I would be grateful for help to resolve this issue. :slight_smile:

Same problem here with a Impress presentation in LibreOffice 6.0 on recent Debian, but no solution found.

I just reopened, which describes the problem.