Firefox and Chrome different behavior in Camera position setting

Dear all,

we are developing a Territorial Atlas using Cesium for an European project.
We encounter some strange and different behavior from Chrome and Firefox, especially in the camera position setting.

The Territorial Atlas is visible at the following address (it is under development so not all functions are available):

After the loading phase, clicking on the "Discover the Map" button the page scroll down...

Here, the camera is positioned correctly in Chrome, instead in Firefox it is positioned over the North pole (I guess :-))

Any Idea?

Moreover we have extended the cesium primitives within a low poly tree model (2 cross plane). You can check an example if you select the "Alba Iulia" pilot from the menu, go to "local" zoom and enable the "Green Areas" layer from the layers icon on the right.