[bug 968039] Workaround for first highlight position in Australis tour

For reference, this is a temp workaround to fix: https://github.com/mozilla/bedrock/pull/1657#issuecomment-34061377

Suggested here: https://bugzilla.mozilla.org/show_bug.cgi?id=968039#c3

You can test this PR in today's Nightly - first time you open the browser with this page in a loaded tab, you should be able to see the issue before this change.