One unexpected behavior I had was where I selected all the songs in a particular folder and I must have dragged one of the songs on top of another song, I'm not sure, it happened very quickly. Fakin The Funk seemed like it locked up for about 30 seconds, and when it came back it had set the title of all the songs in the folder to the song I had initially clicked on (was about 8 albums). I was able to set them all back based on the sub folder they were in, but woo! that could be disastrous on a root folder of your library. (Let me clarify, this was before this update)
I'm not sure what the action was that I did, but maybe offer a warning if you are changing more than a certain amount of songs or a way to disable whatever it was that I did.
And one possible bug. I have one of the libraries I access over the network as the root folder of that drive. When I am at the root of the drive I can't select "Rescan Folder". Fakin The Funk wants me to be on a folder in order to choose that option. Is there a work around for this?