The first is used by the real-time synchronization while the second is used by notifications. We should disable them in order to speed up the loading time a bit.
I tried disabling the notifications by using the embed mode but it seems it affects the menu entries (some menu entries disappear) so I end up changing the "service name" (see commit change).
With the latest version 1.16, the Diagram editor is making HTTP requests to the following URLs:
The first is used by the real-time synchronization while the second is used by notifications. We should disable them in order to speed up the loading time a bit.