UI does not unsubscribe vm.status calls
When on VM page the UI will make one call to vm.status for each VM.
When navigating away from that page it will keep doing vm.status calls.
If you go back to VM page it will add new calls to the queue, making 2 calls to vm.status per VM, periodically.
This will add up and DoS middleware with dozens of calls per second.
Additionally to unsubscribing when navigating away a single vm.query call could be made to get status of all VMs at once, instead of vm.status for each VM.