Line highlights on Debugger tab are off by 4 after some Unicode characters

Fixed Issue #8186098


Prime O.
Jul 15, 2016
This issue is public.
Reported by 1 person

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Steps to reproduce

  1. Go to
  2. Open F12 and go to Debugger tab
  3. Open sns.js file and scroll to around lines 12767 and 12771
  4. Add breakpoints around afore-mentioned lines
  5. Highlights for breakpoints after line 12767 appear in wrong positions


1 attachment

Comments and activity

  • Microsoft Edge Team

    Changed Assigned To to “Brad E.”

  • Hello,

    Thanks for the feedback on Edge. We appreciate you taking the time to file this item.

    I am not able to repro this as you have described.  I am including a link to the screenshot showing what I am seeing on my end when I am selecting the exact same break points. There were some issues with this in the past that I believe were corrected.  Please let me know which version of Edge that you are using so that I may better assist.

    Link to screenshot:!Aj5TlyX5MkUmhMtD4XYMr3_uiah3zQ

    All the best,
    The MS Edge Team

  • I can myself only repro this in F12 Developer Tools when running them from IE 11 Version:
    11.0.14393.0 Update Versions: 11.0.33, but not via Edge.

    I see that the Unicode characters are OK in Edge (but not in IE) and the demo application also works now in Edge (but not in IE). I’ve noticed other improvements to Edge too so I can easily believe this bug was fixed in the meantime. Good work!

  • Microsoft Edge Team

    Changed Status to “Fixed”

  • Thanks for your kind words regarding Edge. Please note that IE feature bugs are no longer working on IE feature bugs any longer unless they are security related.  I’ll close out the item as fixed since this issue tracker focuses exclusively on MS Edge feedback.

    Best regards,
    The MS Edge Team

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