invert button doesn't work with touch

[boxerab]

tapping invert makes the image change twice: invert, then back to original. So, it seems to receive two events.

[chafey]

I have event handlers for both touch and mouse events. It sounds like your device may be trigger both of those on a touch and not just the touch (like iOS does). I'll need help with debugging this on other devices as I don't have an android device