Steps to reproduce the problem: 1. Open attached testcase in Chrome. 2. Open developer tools (press Ctrl-Shift-I). 3. Switch to the Elements tab and select the body element. 4. Under Styles press the + (New Style Rule) button. 5. Press Tab (go to entering a CSS property), enter "background", press Tab again (go to entering the value), enter "red" and press Enter. What is the expected behavior? The new style rule is added and the page background gets colored red. What went wrong? The new style rule simply disappears, page appearance doesn't change. Upstreaming https://code.google.com/p/chromium/issues/detail?id=178109
Created attachment 191191 [details] Patch
Committed r144622: <http://trac.webkit.org/changeset/144622>