Tools and Views is not able to drop down.

Steps to Reproduce

1. In Chrome V23, click the Issues drop down and select more
2. Click the Tools drop down and note that it works
3. Click the actions drop down and change the status of an issue
4. Click the Tools drop down and note some times it works some times not.
   if it works,now update one more issue then check the drop downs.
5. note no drop downs work any longer.