Page title dots are not escaped when creating a link to non-existent page in the WYSIWYG editor

Steps to reproduce

• Edit an existing page in wysiwyg mode
• In the editor, type text "Version 1.2.3", select this text and hit the "Link" button
• In the link dialog box, the "Page" field value is "Version 1.2.3"
• Click ok

Actual result

The created link points at a nested page whose full name is "Version 1/2/3" (using a PageReference representation)

Expected result

A target page with name "Version 1.2.3" (= "Version 1\.2\.3" using a DocumentReference representation) would be more expected.