UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3438.3 Safari/537.36

Steps to reproduce the problem:
1. load test case (optionally open dev tools)
2. focus input
3. switch via alt-tab to another window

What is the expected behavior?
The Javascript has on 'blur' a call to window.alert(). 

After clicking 'OK' the input state should still be blurred.

What went wrong?
Clicking 'OK' the input gets an 'focus' event again, followed by another 'blur' event. This second blur triggers an alert and we have an endless loop.

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 68.0.3438.3  Channel: dev
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version:
 

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