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VE.BUS DC/Battery Temp value different (halve) to GX/BMS values

I have an ESS running, based on 3ph Multiplus-II/5000, Cerbox GX and Pylontech Batteries with internal BMS.

Everything is running smooth, however the Intverter/VE.BUS reading for the DC/Battery Temperature is reporting different to the values from BMS, i.e. 10degC on VE.BUS where GX/BMS reports 20deg.

Looking at the readings over time, these seem to be halve the value as the ones from the BMS which are matching OK according to environmental temps.

Firmware version of the MP2 is 498.

Is this some kind of bug or a config problem?

multiplus ve.bus
2 |3000

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