Images stretched/warped when exporting to PDF, since newest Libreoffice version

This worked fine before, but after updating Libreoffice, exporting to PDF doesn’t work properly anymore. Images are stretched or warped. See these screenshots for example:

In Libreoffice:

In PDF reader:

How can I fix this?

(Edit: activated screenshot -AK)

Try my fix on this thread:

Everything you say suggests the OpenGL/OpenCL bug - see reply to Q64314.

While this is another OpenGL-related bug (tdf#94739) it has now been fixed for v5.0.5, v5.1.0.1, and v5.2.0.

Indeed, and at the bottom of the reply to Q64314 it says:- “Patches have been committed to fix this in all versions (2015-12-12)”.

As I read that comment, it seems made in conjunction to tdf#94851, rather than tdf#94739.

tdf#94851; ach! academic. Both are marked the same: Status: RESOLVED FIXED.