The toolbar of the classic editor loses its responsive style after triggering the sticky style

[letsbug]

📝 Provide detailed reproduction steps (if any)

1. Go to https://ckeditor.com/ckeditor-5/demo/feature-rich/
2. Focus the editor
3. Scroll the page to make the toolbar sticky
4. Use the mouse to slowly drag and reduce the browser width. When a certain threshold is reached, the toolbar will exceed the editor container and the dynamic responsive style will be lost. like this:

PS: It seems that only the Classic editor has this problem

✔️ Expected result

The expected result should be that the toolbar width is consistent with the editor width and should not exceed the editor area

❌ Actual result

The actual result is that, when a certain threshold is reached, the toolbar exceeds the editor container area and also exceeds the Body area.

📃 Other details

• Browser: Chrome 130.0.6723.117
• OS: OSX 15.1.1
• First affected CKEditor version: Unknown
• Installed CKEditor plugins: Default plugins list

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[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may still be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.