Cesium map listeners not removed when map is closed

[robyngit]

When navigating away from the Cesium map in the data catalog view, the mouse listeners are sometimes still active, as can be seen from a number of errors in the dev console:

The above error is repeated continuously after navigating from the data catalog to a dataset landing page

I can reproduce this in Firefox but not Chrome. Either way, these listeners should be removed when the map is removed from the DOM.