Bug appears in Safari 9.0.2 and Chrome Version 47.0.2526.111 (64-bit)
Firefox 40.0.3 works fine
When dragging menu items into place they float about 300 pixels above cursor and will only settle into child nesting location. seems to work normally when there are only a few items and act up after 4.
I'll be editing my menu pretty often and having to manually click "Move out from under..." is getting old.
thanks for the great theme otherwise!