I have seen the same issue in the archive but without a single reply.
Randomly, Silverstripes "Hangs" when I try to publish or Save.
It just keeps the Publish or Save button rotating, but does not do anything.
I have to clear the browser cookies and restart.
I have the latest silverstripe and latest firefox.
Can it be an error while saving?
I have access to the logs, but nothing is logged in the date/time I get the weird "bug"