When creating an undefined or existing page link with tool tip, the Undefined page shows the name of the tool tip instead of the page name.

Steps to reproduce:

1. Create an undefined/existing page link in a page ( [Sampe link|undefined page tip|sampletooltip] )
2. Click on the 'Browse Space' link for the space
3. Go to the 'Advanced' tab and click on 'Undefined Links' from the left panel

You should be able to see the tool tip is shown at the undefined page field instead of the page name.