V3.6 firmware update causes problem in mode 3. Operation stops with message: DESS error code

Yesterday I installed V3.6 on Cerbo GX.
We run our system (3x MP2 3x (JK-BMS 48V 315Ah) currently in mode 3 driven by Loxone modbus (10 sec interval on power setpoint)

System runs fine now. Problem seems solved after modfying the Loxone side and disabling the DESS system in vrm-portal