This is in addition to the know FF bug that will not allow you to complete a volume mount w/o going "back" first.
I just spent probably an hour trying to figure out why I could not add a standby VM to one of my hypervisors. The standby setup would close abruptly after entering the destination location folder and other VM settings with no error message. It would also not initiate a one time standby.
The setup completes using IE.
I don't really need a reply but someone is going to be searching to this so I am adding it for posterity.