The behavior is expected due to the height configuration that is set to the Scheduler. If you wish to dynamically resize the Scheduler height, you can add some custom code to do that in the navigate event based on the e.view. We have a How-To article about changing the height dynamically. I am also sharing a small Dojo example demonstrating how you can do that based on the view.
Let me know if the above was helpful, or if you have any further questions.