Please add user-select:none on the `<canvas>` element.

[Francisc]

When you play with the mouse, you select the canvas.
Only tested on Canary 28 on Windows 7.

-webkit-user-select:none;
-moz-user-select:-moz-none;
-o-user-select:none;
-ms-user-select:none;
-khtml-user-select:none;
user-select:none;

[subprotocol]

User-select: none should be in there, but I have not updated and pushed the sub module for the site. I am traveling and can't do this right now.

Would you mind checking out master and verifying that it no longer exhibits the issue?

Thanks!

[subprotocol]

This is now fixed by 843f451

Thanks for the heads up.