I found this bug also in the printmenue. If I will print any document which I created with affinity photo, the live filter area is missing in the printed document.
as example: If I use the livefilters which called in German Version such as Waves or swirl. And I will print my Picture, in Preview of the print menue it looks all very well But
in the printed document the live filter effect ist missing. The same is in export to Pdf as User M1000 has written above.
For a correct print or make a PDF file , I help myself with an export my Pictures (with live filters) to JPG and print these then it will looks correct inclused the live filter.
In the attached 3 files you can see the effect of the missing Live filter area it. In the printed document is missing the livefilter area
but in the preview of the print menue it looks like the orign.