Printing error, intermittent

So a user is seeing this issue. I see from back in 2015 there were people having this same issue, but I can’t find anywhere that has a solution. The problem is intermittent, which is a pain. I can preview the report from the system monitor and it looks fine. If I try to reprint the PO it prints just fine. Any ideas on what could be causing it that I could test for?

Is this just the PO form and is it custom?

That’s the only place we’ve noticed it. Yes it’s custom.