Tor Browser crashes when clicking on link

How to reproduce:

• http://askubuntu.com/
• click on log in
• click on log in with stack exchange
• Wait maybe 20 seconds until you see "You can continue and log in manually here however.". Wait until the loading button stops. Will take a few seconds.
• Click on it.
• Nothing happens.
• Click on it again.
• Firefox terminates.

Affected version:

• Tor Browser Bundle version 2.2.39-3
• Tor Button 1.4.6.3
• Firefox 10.0.0.9 ESR

Unaffected version:

• Tor Browser Bundle version 2.2.39-1
• Tor Button 1.4.6.3
• Firefox 10.0.7 ESR