### Which Umbraco version are you using? (Please write the *exact* version, example: 10.1.0) 15.0.0-RC1 ### Bug summary When using the new TipTap editor I have disabled an extension in this case the `Underline` one, but still have it in the toolbar configuration. Navigate to a content node with the editor, the Underline button is still in the toolbar and clicking on it does nothing. ### Specifics <img width="1293" alt="image" src="https://github.com/user-attachments/assets/09ff2c09-48dc-429b-9d92-a06eede22609"> ### Steps to reproduce Configure the TipTap RTE editor defaults to disable the Underline extension and keep everything else as is. ### Expected result / actual result I expected the Underline toolbar button to not appear when using the editor inside a content node. --- _This item has been added to our backlog AB#44725_