BUG: Mouse UP events does not work as expected on HTML5

[62316e]

Hi,

I have 1 buttons on the stage.

Steps to reproduce:

1. Left mouse down over button1
2. Move mouse out from button1 (or stage)
3. Release left mouse button

Expected results: -Button state shall switch to normal state

Actual results: -Button shall switch state to normal

Looks like this is openfl bug.