QWER and Mouse Click won't work simultaneously.

[neelkadia-zz]

Issue in the Demo shown at Playground.js where user try to make keyboard strokes and Mouse click simultaneously, it's not working as it should. Where two Keyboard keys simultaneously working fine.

[SuperUserNameMan]

i dont have this issue with Firefox 49.0.2 64bits, under Windows 8.1
i dont have this issue with Chrome 54 neither

[neelkadia-zz]

Sharing a video to reproduce. I'm having Chrome Version

54.0.2840.71m on Windows 8

[neelkadia-zz]

ScreenCapture_1.docx

Just change the extension to .flv Github won't allow me to upload .flv or .mov file format.