Dragging loops from a Soundpool library onto a track will often fail and place the loop on a wrong track. Usually the first track (top most) in the project. Quite a mess when you are working on tracks 10 or higher.
Also the Timestretch/PitchShift window works and then doesn't. It won't pop up (Shift S) if the track edit is in full screen and sometimes won't work in the regular multi window mode. As example on a particular Bass loop I have performed many (Shift S) pitch shifts and out of the blue it no longer will respond to a (Shift S) or mouse right-click [Timestretch/PitchShift] command.