I use Firefox to bulk print Ebay invoices. It's been just fine for years. But 2 days ago it started printing just every other page in full. Intervening pages had only the top 20% printed (headers and footers are set to blank), and it prints one extra blank sheet at the end of the print run. 'Fit to page width' is enabled. I print at A5 size. When I check print preview it shows the problem exactly. The preview confirms 80% of every second page is missing, and there is an extra blank page at the end. Anyone else have this problem?