Bug: isDown state won't update when mouse released outside of game canvas

[rexrainbow]

Here is a sample code of this issue (v3.10.1)

1. Press left-key of mouse inside game canvas,
2. Drag outside game canvas,
3. Release left-key outside game canvas,
4. Move cursor back to game canvas.

No mouse key pressed after last step, but the scene.input.activePointer.isDown is still true.

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[photonstorm]

Thank you for submitting this issue. We have fixed this and the fix has been pushed to the master branch. It will be part of the next release. If you get time to build and test it for yourself we would appreciate that.