DWright,
I have had no solution to this!
I believe Affinity is a good product but you have to be honest with yourselves. My printer is a good printer with a borderless feature. To simply say it's my printers fault is passing the buck is not good enough.
Like I say is works fine with photoshop, Indesign and Illustrator and I don't want a work around by making a Pdf and printing from Acrobat Reader. A minor thing like this doesn't give me the confidence to move over to Affinity.
Please find a solution - If Adobe can do it, so can you.
Your positive answer would be appreciated - Thank you.