After running across this article I found a bug report filed with Redhat:
https://bugzilla.redhat.com/show_bug.cgi?id=191601
My solution was to edit my printer's ppd file:
bash-3.2# diff Canon_MF4100_Series.ppd.orig Canon_MF4100_Series.ppd
21c21
< *DefaultPageSize: A4
---
>...
