It seems like the patch at https://bugzilla.mozilla.org/attachment.cgi?id=219861&action=view would fix the issue.
** Also affects: firefox (Ubuntu) Severity: Normal Priority: (none set) Status: Unconfirmed -- devhelp starts with an "empty" page area, which is not redrawn https://launchpad.net/bugs/40320 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs