i found two GUI bugs which were introduced with beta29
first one is easy to find, the mouseover in the butterfly menu is gone.
second is harder to see, select a node (dark grey) and now click on any other node and hold the mousebutton. the dark grey gets funky. i’ve seen this especially when moving nodes. looks broken.
this was tested on 3 different machines, windows 7 64bit, aero on and off