Problem link with anchor

I have Drupal 10.2.7
On my site I have many links with anchor, but I don't know how to insert the anchor.

1. If, for example, I enter /node/125#anchor, #anchor is deleted.

2. There is no possibility of insertion as in this video: https://www.youtube.com/watch?v=XFesGHEeKTQ

Is there any solution? I would hate to have to uninstall the module.

Thanks and best regards