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IE11 bug - javascript script continues execution after the tab is closed

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Steps to reproduce:

1. Open 2 blank tabs in IE.

2. In one of them navigate to this demo page: http://jsfiddle.net/MTJ27/15/ ; it runs 4 web workers.

3. Check CPU utilization (on a 8-cores machine it should show 50%).

4. Close the tab with the demo page, leaving the other tab open.

5. Check CPU utilization again -> it doesn't drop! IE still runs web workers.

Nasty, isn't?

Regards,

Robert



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