Clicking too fast on links in the documentation cause page not found failure

To reproduce:

• type services.model in the search box to the right
• click to display the documentation for services.model
• a function like createDocumentReference will have DocumentReference as return type. In order to use this, we need to know what DocumentReference is and how it can be used.
• Click on the DocumentReference, a "Not Found" message is displayed

The same reproduces when trying to access the Query type, which is a return type for services.query.hql, for example

This is on Firefox. On Google Chrome it works