-e: see title

When I disable captureAllKeyboardInput while the button is still pressed and I release the button, the input system still thinks the button is pressed.
So, when I enable the captureAllKeyboardInput on a later point in the code. I have to press this button multiple times to get the pressed event.

-repro:
--Open the project and make sure that in the build settings in the WebGL Template “TestTemplate” is selected.
--Create a Webgl build of the SampleScene.
--Open the Index.html in your browser (I used Firefox).
--Press the spacebar and you will get a simple dialog box. The first time you do this it will work fine. Now when you close the dialog box and press spacebar again you will see that the dialog box will not show. You have the press the spacebar a second time to show. And this will happen again when you close the dialog.