Text from <dt> element dropped in CKEditor Accordion

I am having the same issue, the problem is that the "innerText" property is not working in JS, I think it's due to it not being rendered / is hidden.

https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/innerText

If you replace it with "textContent" it works. Attached is a patch.

@UTCbrij
The issue did not regenerate for me.
I am using -

• drupal 10.2.3
• Kite theme

May i know what is your project Drupal version?
Also the issue may be due to any jQuery and javascript bug.

I had the same problem:
Drupal 10.2.5, Adaptivetheme

My settings:

[x] Collapse all tabs by default
[ ] Keep accordion rows open when opening another one
[x] Animate accordion open / close
[ ] Open tabs with hash using anchor links or on page load

The patch in #3 helped me.

I am not getting error on Drupal 10.2.3 with Default Olivero theme.
So i am sure that issue is due to Adaptivetheme so checking for Adaptivetheme theme.

The issue is also not more me in new sub theme of Adaptivetheme.

So the issue is in custom work in custom theme.

Got the issue with drupal 10.2.7 and Olivero child theme.
Same settings as #7.
The patch in #3 helped me to.