This question was originally posted on DCIM Support by Brendan Mc Cormack on 2019-11-29
I've created a virtual sensor to add the total active power of 3 UPS systems.
When the sensor is created first it displays the kW value as I have the Map set to "Show Value, Active Power Total)
After an undefined amount of time the value disappears.
The other virtual sensors on the same map view are fine.
Hovering over the sensor still reveals the value
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