Changing inverter operation mode doesn't go through unless "verified" by SEMS app

[zyberzero]

Integration version: 0.9.9.27
HA Version: 2024.9.1
Inverter: GW8KN-ET
Firmware: 04029-10-S11 / 02041-23-S00
Battery: yes

If I change inverter operating mode in HA (let's say, to peak shaving), the correct mode is selected in the SEMS app, but I need to re-save the settings in the app for the inverter to start peak shaving (esp. for peak shaving, I need to go to the peak shaver settings and re-save there as well).

If I change the mode back to general, I still need to go to the SEMS app (which now shows general mode), and save again for the inverter to start behave like in general mode.

I could imagine that it fails peak shaving due to missing parameters if they need to be sent at the same time, but switching back to General mode should work regardless?

What am I doing wrong?