I recently updated my HA 0.85 to 0.86.2. Big change is the lovelace ui. Fortunatelly the default UI looks nearly the same as my old ui. But since I was using cunstom-ui now something is missing: last-changed information.
I figured out, that using the ui editior I can add secondary_info: last-changed per device. But since there are so many devices and I want it to be available for all devices, questions is, how to enable secondary_info: last-changed for all devices (same as with custom-ui and the .)?
Any ideas?