UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

Steps to reproduce the problem:
1. Inspect element
2. Click onto element.style field to add new line
3. Write something like margin":
4. Try to edit property name (margin").

What is the expected behavior?
Changing name of the property for example?

What went wrong?
Cannot change name of property or unexpected behaviors.

Did this work before? No 

Chrome version: 58.0.3029.110  Channel: n/a
OS Version: 
Flash Version: