Hi,
I found a little bug in button behavior.
If you set your button to send msg when it is "Released" and your button do some stuff but finally disables input, the msg is sent 2 times.
It happens when your button start a transition and you want to block input during transition by example. When input are enabled/disabled, inputs are verified so, the input is triggered 2 times. Not a big deal, but it can be dangerous...