Nebula > Clients (AP) > Status column all shows "Offline"

All of the devices connected to my APs show as "Offline" in the "Clients" view but when I go to Device > Access Points, open a specific AP and look at "Current Stations" in the "Live tools" section I can see all the active devices.

This is the same across all my sites and all my organisations.

This is only the case when I log in from a PC via a browser. The app on my mobile shows the correct status in Clients