Fixed firefox issue with undefined event
Fixed firefox issue with undefined event

Samda/flip,nnattawat/flip,WeCodePixels/flip,WeCodePixels/flip,DavidGarciaCat/flip,Danzeer/flip,DavidGarciaCat/flip,Download/flip,Danzeer/flip,UmarMughal/flip,Samda/flip,UmarMughal/flip,Download/flip