I'm seeing the same bug as well, I've also noticed if I change the font type and font size from preferences, font type and size of the context menu also changes. I've attached a screenshot showing the bug.
** Attachment added: "geditBug.png" https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1242984/+attachment/3899302/+files/geditBug.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gedit in Ubuntu. https://bugs.launchpad.net/bugs/1242984 Title: Gedit context menu font is monospace Status in “gedit” package in Ubuntu: Incomplete Bug description: Start Gedit in Ubuntu 13.10 Right click in the text area Notice that the context menu font is Monospaced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1242984/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

