With \usepackage[showframe]{geometry} inserted in 2 on 1 pgfpages layout produce an unexpected result.I have updated latex last week, before that this problem did not appear
\documentclass{article}\usepackage{lipsum}\usepackage[showframe]{geometry}\usepackage{pgfpages}\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm,landscape]\begin{document}\lipsum[1-5]\newpage\lipsum[1-5]\end{document}
This is how it looked like before the update.
