Image is missing the restricted exception class in the data

[Mgsy]

📝 Provide detailed reproduction steps (if any)

1. Go to the editor with Restricted editing and configuration allowing inserting inline images to the exception fields
2. Set the following initial data: <span class="restricted-editing-exception">This is example content</span>
3. Put the caret inside the exception marker
4. Insert an image
5. Call editor.getData()

✔️ Expected result

The image markup includes the restricted exception class, so it could be properly recognized during editor initialization

❌ Actual result

The image markup is missing the restricted exception class, so after reloading the editor (or calling editor.setData( editor.getData() )) it's impossible to edit the image.

It is correct in the editing view.

---

If you'd like to see this fixed sooner, add a 👍 reaction to this post.

[stevenrai]

This effectively makes the fix for #15521 unusable. Timeline to resolve this so images can be successfully inserted in to restricted docs?