Issue 1797: Blue bar in diff is duplicated
Status:  New
Owner: ----
Reported by mholmqu...@wikimedia.org, Feb 21, 2013
************************************************************
***** NOTE: THIS BUG TRACKER IS FOR GERRIT CODE REVIEW *****
***** DO NOT SUBMIT BUGS FOR CHROME, ANDROID, INTERNAL *****
***** ISSUES WITH YOUR COMPANY'S GERRIT SETUP, ETC.    *****
***** THOSE ISSUE BELONG IN DIFFERENT ISSUE TRACKERS!  *****
************************************************************

Affected Version:

What steps will reproduce the problem?
1. Go to a diff (I use side-by-side, not tested with unified)
2. Double-click on a line to open a comment box and mark the line with the blue underline style
3. Click "discard"
4. Click on another line - there may now be two blue lines!
5. Click on the first blue line and then click away, it will disappear.

What is the expected output? What do you see instead?
One line. Two lines.

Please provide any additional information below.
Firefox 16 on Ubuntu GNU/Linux 12.04; tested at the Wikimedia Gerrit instance which is running 2.5.2.