If you start to add a link, and change your mind (e.g., you realized that you have the wrong word selected), there is no way to simply cancel adding a link. You have to remove the link with the trashcan icon.
Steps to reproduce:
- Select any word.
- Press ctrl-K to enter link tool.
- Attempt to cancel the link by closing the unwanted link tool dialog box using Esc key or the < button.
- Discover that VisualEditor linked the word anyway.
If the Escape key and "Cancel" button are worthless for escaping/going back/cancelling, then they shouldn't be present or have any effect.
(T93749: Have close buttons on inspectors and dialogs alike, in mobile and desktop environments altered this to re-add the cancel/close button.)