UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Steps to reproduce the problem:
1. Open a website which is using jquery or other libraries
2. Blackbox jquery
3. Add EventListeners for mouse in the Source Tab in dev tools
4. Now move mouse in the view area / over the dom
5. Breakpoint is hit and it is opening a file named as debugger://VMxyz

What is the expected behavior?

What went wrong?
Need more details about VMxyz and how it can be blackboxed, to debug only the code which is written by me and not jumping to any other code base.

Did this work before? No 

Chrome version: 52.0.2743.116  Channel: stable
OS Version: OS X 10.11.6
Flash Version: Shockwave Flash 22.0 r0