UserAgent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2950.4 Safari/537.36

Steps to reproduce the problem:
1. go to any website
2. open developper tools
3. hit the Watch + button

What is the expected behavior?
Should be able to enter a watch

What went wrong?
Cannot enter watch

Did this work before? Yes ?

Chrome version: 57.0.2950.4  Channel: dev
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 24.0 r0