Hi, recently i got an issue exporting to PDF. I got almost exactly the same but the only drawing I did in Designer the color is wrong. (the color is made in designer with a pixel layer painted with a specific watercolor brush).
I upload the resulting image that shows the difference between the Designer file and the exported PDF.
Also the Affinity Designer document Color settings and the PDF export settings.
There are a few features that the software is lacking that im a little bit surpris