EVCS still charging if battery SoC is less than in the EVCS setup

Hello, Could you explain when EVCS should stop charging in the auto mode for example if both parameters parameters: “Start charging at backup battery SoC (%)” and “'Stop charging at backup battery SoC, if Off Grid (%)” is enabled.

In my case “'Stop charging at backup battery SoC, if Off Grid (%)” is set on 50% and battery SoC is 48% but EVCS still charging from batteries. How far I understand EVCS should stop charging at 50% of battery SoC in this case.