禁用Chrome开发者工具中的CSS更改自动保存

I am referring to the save feature in the 'Sources' panel of the Chrome Dev Tools. I have been using this feature for a long time in the stable release of Chrome, but after installing the build from the developer channel, I notice that once I have saved the file the first time, Chrome no longer prompts me to save and just does it automatically after every change I make.I am referring to the save feature in the 'Sour