Pasting a bold paragraph with a `font-weight: 400` span inside makes the whole text bold

[kubaklatt]

📝 Provide detailed reproduction steps (if any)

1. Download the attached repro.html
2. Open https://ckeditor.com/ckeditor-5/demo/feature-rich/, clear the editor, paste the content from repro.html

✔️ Expected result

foobar should not be bold

❌ Actual result

foobar is bold

📃 Other details

• Browser: Any
• OS: Any

---

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