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Peak power vs. instantaneous power in com.victronenergy.solarcharger registers

I am reading out some com.victronenergy.solarcharger registers via the libmodbus library (https://libmodbus.org/) from an EasySolar-II GX running firmware 3.01. According to the CCGX-Modbus-TCP-register-list-3.00.xlsx, register 789 refers to the instantaneous PV power (with some scaling factor). Register 785 refers to today's maximum charge power. From the register descriptions, I would have expected that register 785 holds the maximum value of the 789 register (with scale corrections taken into account of course).

However, I have observed that the instantaneous power (register 789) exceeds the peak power (register 785) in some cases. Are there some losses taken into account in register 785, or is this a bug?

EasySolar All-in-OneModbus TCP
2 |3000

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