My mistake. TL;DR: Qt patch was wrong. This new version should work.
Longer explanation: I first added a function named ubuntu_gtk_disable_overlay_scrollbars() to GTK2, and this is what the current Qt patch uses. Later I decided it was more elegant to instead expose two functions: ubuntu_gtk_set_use_overlay_scrollbars() and ubuntu_gtk_get_use_overlay_scrollbars(). I correctly updated my build of Qt to use these new functions, but forgot to refresh the patch before attaching it. If you look for me I will be under that large brown paper bag in the corner. ** Patch added: "kubuntu_93_disable_overlay_scrollbars.diff" https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/805303/+attachment/2485928/+files/kubuntu_93_disable_overlay_scrollbars.diff -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/805303 Title: Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed with the default qt4 gui To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/805303/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp