EP760: Feed to Grid and SOC High

@BLUETTI_CARE Please help me understand how Feed Into Grid setting operates. I have the following configuration under Working Mode:
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SOC 17% - 75%
Time of Use = enabled
Schedule:
0000-0215 Discharge (peak)
0215-0430 Discharge (peak)
0430-0545 Charge (off peak)
0545-0645 Charge (off peak)
0645-2359 Discharge (peak)
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Firmwares:
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IOT Comms 9043.18
EP760 ARM 5023.27
EP760 DSP 5022.21
B500 Safety Module 1026.10
B500 BMU (BMS) 1028.07
B500 Over Voltage Module 1027.06
BMS BCU 1025.27
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My Max Discharge Power is set to 3000W and 33A. When I enabled Feed Into Grid at 08:45 the current SOC was 56% and EP760 immediately output 3kw to grid. I then turned off Feed Into Grid and turned it back on at 10:53 when SOC was 55%. Again it immediately fed into grid 3kw. Both times 0845 and 1053 are inside the 0645-2359 Discharge (peak) period so EP760 is correct with obeying schedule.
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But I expected feed into grid to only start after also reaching SOC High value 75%. The SOC High value is clearly ignored in the feed to grid decision making. Is this working as designed ? If yes, can Bluetti please improve EP760 to also obey SOC High value before feeding to grid in the peak period ?
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Thank you