UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3061.0 Safari/537.36

Steps to reproduce the problem:
1. Goto chrome://flag
3. Enable 'Experimental JavaScript' (Restart)
2. Now, Open PoC: https://jsfiddle.net/8a7Lqnzm/12/
3. Test given sample PoC(s) triggering events, to check whether those DOM events are functional
3. Check console for more error 

What is the expected behavior?
Expected behavior is that the simple DOM event (inline event handler)  should execute JS as intended when 'Experimental JavaScript' is enabled.

What went wrong?
Enabling JS 'Experimental JavaScript' broke inline javascript events on the websites using it.

Console shows 'Uncaught SyntaxError: Unexpected end of arg string'.

Did this work before? Yes 57.0.2987.110

Chrome version: 59.0.3061.0  Channel: canary
OS Version: OS X 10.12.4
Flash Version: 25.0.0.148

I am facing this issue since Chrome: 59.0.3061.0  / JS: V8 5.9.154, 

Tested and validated on latest Canary release for Windows and macOS.

Event Handler works just fine if the 'Experimental JavaScript' flag is disabled.  

Note that it was working fine in older versions with flag enabled.  From enduser's perspective, I am not sure whether 'Experimental JavaScript' is obsolete/deprecated and should not be used. 

Attached are some photos where it breaks Google Docs (Move feature) and Blackboard. Basically, any website using inline events would not work if this flag is enabled.
 

Deleted: Screen Shot 2017-04-03 at 10.07.31 PM.png 253 KB

	Screen Shot 2017-04-03 at 10.07.31 PM.png 253 KB View Download