I use Writer for a particular project in which I create booklets following export to PDF.
I have had some issues with the quality -- particularly typographic quality – of the exported PDF from Writer. The letter spacing and font characteristics should match the original exactly. So, using 11pt Roboto font, I should see output indistinguishable from the original Writer doc. Recently I have seen poor letterspacing. I had to overcome this by exporting to Word, and creating the PDF from that.