Add link to existing text - link is "locked"

It seem that if I select some text and add a link to some of the text, the link appears in the layer tree with a “locked” icon. It is now impossible to delete the link using the tree. However you can delete just the link using right mouse click.

See video: https://www.useloom.com/share/8154472ecdfd41999c0b315fd85abaf7