Realtime updates on cellular connection, not on WiFi

I created a DTH for a motion detector with lux measurement. Strange thing is that when I’m away from home on 4G data, and I have the device open, I see changes (motion/no motion, lux updates) realtime on the screen. When I return home and am on the same wifi network as the hub, the screen becomes static. I can see things change within the device list, but I have to go in and out of the device to make the data update on screen. On a WiFi connection the hub does not seem to push data?

Edit: behavior is the same on iOs devices…