1) What happened
Fatal errors and objects in the wrong place (and time) when built for Flash. In the flashlog (included in the game folder) I can see the following:
The file 'none' is corrupted! Remove it and launch unity again!
[Position out of bounds! 16032 > 16028]
TypeError: Error #1009: Cannot access a property or method of a null object reference.

2) How can we reproduce it using the example you attached
Build the project for flash player, open the html (tried different browsers) and try to press the buttons of the game.

To see the normal behavior of the game you can play it from editor or webplayer or windows standalone or android...