vSphere Client Displays VM Annotations Incorrectly

In the vSphere client, I clicked a VM and then clicked the Summary tab and added an annotation for that VM.  Then I clicked on a different VM, and the same annotation text appeared. As I click different VMs, it appears that the Annotation text doesn't get refreshed until I click either (a) a VM that is currently running or (b) a VM that has non-empty Annotation text of its own.  This was using vSphere Client 4.1.0, attached to a vCenter 4.1.0 server.

Is this a known problem? Or am I doing something stupid? Is there some way to get the vSphere Client to display the current, correct Annotation text for the VM that is currently selected?

Thanks.