Chrome Version       : 63.0.3239.108
OS Version: 10.0
URLs (if applicable) : https://www.google.co.uk/
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari:
    Firefox:
    IE/Edge:
 Chrome v62: OK



What steps will reproduce the problem?
1. Open dev tools on a site with some scripts ie Google.com (ss attached)
2. Open any JS file in the sources panel (no work spaces..)
3. Add a breakpoint.
4. Make a cursory edit to the script (breakpoint greys out as expected for live-edit) and save the change (star next to file name on tab disappears as expected on save).
5. Break point returning to full blue (indicating save completion) will take >30s, sometimes more.


What is the expected result?

Saving should be, and previously was, almost instantaneously completed.


What happens instead of that?

Saving takes > 30s. 


Please provide any additional information below. Attach a screenshot if
possible.

Tested in Canary, exists there also. Tested in Chrome v62 and bug was not apparent. Basically means I can't debug with dev tools..

Only seems to happen in files with > 1000 lines.

The above steps to follow were done on the google.com site, on the first minified JS file in the sources file navigator. Screenshot is attached. 

UserAgentString: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36



 

Deleted: Dev_tools_live_edit_bug_SS.png 223 KB

	Dev_tools_live_edit_bug_SS.png 223 KB View Download