Usage & Return in one row?

[Geondre]

Since the latest update I see a green (Return) and a Blue(Usage) line simultaneous, providing power while consuming....
How is is possible to see both, normally powerreturn is extracted from the power usage, so I will either be providing OR consuming not both together.

[freijn]

With a 3 phase connection its possible to have both.

Also as today in netherland there have been many clouds. 1 minute you are returning and the next minute using.
Puting that in a graph will result in 2 spikes at the same time block.

[Geondre]

OK Thanks Freijn, but I only have a one phase solution...
Or is it just that the graph is giving the wrong impression?