Please see https://bugzilla.gnome.org/show_bug.cgi?id=709089#c6 for another use case when the overlay scrollbar is buggy. I suspect that it draws itself incorrectly initially when it hooks up to a GtkAdjustment. Then after modifications to the adjustment it works correctly.
** Bug watch added: GNOME Bug Tracker #709089 https://bugzilla.gnome.org/show_bug.cgi?id=709089 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/827380 Title: scroll bar disappears when switching tabs Status in “gnome-terminal” package in Ubuntu: Confirmed Bug description: 1. Open gnome-terminal. 2. Open a second tab. 3. Press enter until the bottom of the screen and the scroll bar appears. 4. Switch to the other tab, then switch back. The scrollbar is now invisible until you push enter again. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: gnome-terminal 3.0.1-0ubuntu3 ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0 Uname: Linux 3.0.0-7-generic x86_64 Architecture: amd64 Date: Tue Aug 16 14:52:18 2011 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1) ProcEnviron: LANGUAGE=en_GB:en LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-terminal UpgradeStatus: Upgraded to oneiric on 2011-08-15 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/827380/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp