CKEditor5 removes commented tags

Support requests can’t be critical here.

If I understand the report clearly, this is losing input data rather than stored data so it's actually major priority, not critical → .

Have you tested this on the CKEditor 5 demonstrations, to find out if this is actually not a Drupal bug?

@cilefen Thanks for your help.

Yes, we tested with CKEditor5 demo.

Source code editing and HTML support (https://ckeditor.com/ckeditor-5/demo/html-support)

On this demo, we edited the html code

<ul>
            <!--<li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html">HTML embed</a>
            </li>-->
            <li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/style.html">Styles</a>
            </li>
            <li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html">General HTML Support</a>
            </li>
        </ul>

and came out of source edit.

Then we again enable the source edit the code looks like this:

 <ul>
            <li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/style.html">Styles</a>
            </li>
            <li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html">General HTML Support</a>
            </li>
        </ul>

the commented

<li>
                <a target="_blank" rel="noopener noreferrer" href="https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html">HTML embed</a>
</li>

was completed but lost from the editor. How can we prevent this from losing our commented code? Please provide any suggestion

I think the next step is to look for CKEditor bug reports of the same.

I am tentatively marking this as upstream, and will see if the component maintainer agrees.

Hi @cilefen

Any progress on this issue?

Are there CKEditor bug reports of the same?