I have found that some components seem to break the onRelease
behaviours of other movieclips.
Can someone verify this!
Create a new fla and add a textArea or comboBox component to
the stage and also a moveclip with an onRelease handler.
If you click on the movieclip first the onRelease handler
works fine but once you have clicked on one of the components the
behaviour of the onRelease handler gets messed up.