14. 11. 2021 v 22:04, Tarquin Wilton-Jones via Therion <therion@speleo.sk>:

I do not care much for Adobe Reader and its inability to draw layered
opacity (which has caused issues for other applications that create PDFs
such as PrinceXML). It's an awful PDF reader.

But only PDF viewer which is able to interprete transparency knockout correctly

Foxit, Sumatra, Evince; these look great to me, and the others the who
were discussing the output with me today.