Fibaro Wall Plug - What does the two power values mean?

Configuration Z-Wave
1

I have four wall plugs, three of them only report kWh and Power but one is reporting values on all three sensors, why and what does it mean?

(this one reports values on the first sensor)
image

(this is how the other three look)
image

2

I removed, reset and re-included the wall plug and now it’s only reporting W on the “Power”-sensor, as the rest of them does. Was it some HA glitch?