I have a problem with the `--disable-web-security` flag. It is not working in Chrome 48 and Chrome 49 beta on Windows.

I've tried killing all of the instances, reboot and run Chrome with the flag first of all, tried different machines as well. In the beta I can see the warning popup ("You are using unsupported flag.."), but CORS is still being enforced. Public version seems to ignore the flag completely. 

There seems to be no news or people reports about that, so it might be a local issue. 
Will be grateful for help or any related info.