Incredibly slow typing in a contenteditable area below not editable element (Edge + IE11)

Confirmed Issue #18991893 • Assigned to Grisha L.


Jiri B.
Sep 14, 2018
This issue is public.
Found in
  • Microsoft Edge
  • Internet Explorer
Found in build #
Reported by 2 people

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Steps to reproduce

When a page contains a div with contenteditable="true", the typing in the div is sometimes unusably slow. You type a character or a word and after 10 seconds or even more the first character appears in the page and the rest is forgotten.

I have attached an example page on which this issue is reproducible in both Edge and IE11, but works without issues in Firefox and Chrome. Just open the page, scroll to the very end of the page and try to type something to the blue area. Typing at the start of the page works normally even in Edge and IE11.

The circumstances that cause this slowness are not clear to me, but it is definitely not just the size of the content in the contenteditable area. The setup is that there is a big contenteditable div, inside there is a big not editable div (contenteditable="false") and below this second div, the typing is very slow.

But the issue is not easy to reproduce with just a big html inside, the issue is very sensitive to the exact content. Sometimes a subtle change of the content of the not-editable div can fix the problem - I have tried to just remove all @nbsp; or even just format (indent) the source html and it started to work normally. But the behavior seems very unpredictable.


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Comments and activity

  • Microsoft Edge Team

    Changed Status to “Not reproducible”

  • Hi Jiri - I noticed you reported this reproducing on 14393.  

    I’ve tried using Windows 10 April 2018 Update, which is the most recent public stable build 17134 and also prerelease builds available through the Windows Insider Program and cannot reproduce the issue.  I would encourage you to update to a newer build and give it a try.  

    Feel free to contact us if you are still having issues.  Thanks! 

  • Changed Status from “Not reproducible”

  • Hi,
    I tried it on a vm with 17.17134 (the free MS Edge vm from Microsoft) and I cannot reproduce it in Edge anymore.

    However, I can still see the same behavior in IE.

    Also it would be very helpful to know what causes this issue in IE - can this issue be avoided by not using some particular style, structure, or anything like that?

    Thanks for your help.

  • Hi Jiri - 
    We are not presently
    working on feature bugs in Internet Explorer outside of security-related
    issues.  But I’m moving this issue over to the appropriate contacts to see if they have any insight about your question.  Thanks! 

  • Microsoft Edge Team

    Changed Assigned To to “wsdcfebrowser”

    Changed Assigned To to “Dave B.”

    Changed Assigned To to “Amit J.”

    Changed Status to “Confirmed”

    Changed Assigned To from “Amit J.” to “Grisha L.”

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