Strange spikes in power graph

[Bostjan]

Version: 3.5877
Platform: Windows 10 x64
Description:
I use FIBARO System FGWPF-102 Wall Plug Zwave+ for switching and power/energy monitoring. I noticed that device (00000C01) that represents consumed energy (kWh) also displays current power in the widget and it's log. There is also device (0000C04) that solely represents power (W). I noticed the difference between those two powers, especially if you check the logs. Look at the time between 22:00 and 6:00 where there is almost no power drawn. The log that represents only power is correct, but the other one that has power and energy/power combined is wrong as power has some strange spikes even though they shouldn't be there. Why? Bug?

Best regards,
Bostjan Erzen