The bug https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1171342 seemes to describe the issue fairly well for me, and the ppa fix from the comments solved it for me.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unclutter in Ubuntu. https://bugs.launchpad.net/bugs/1246000 Title: gtk text widget ignores the mouse wheel Status in “unclutter” package in Ubuntu: Confirmed Bug description: In evince, gitg, gedit when the mouse is hidden using the wheel make the mouse flash but do not scroll down or up. ii unclutter 8-19 ii libgtk-3-0:i386 3.8.6-0ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unclutter/+bug/1246000/+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

