I do know that I am not the only one having this issue, I also know that this happens mostly on low consumption. Right now as I write this my consumption is 434 watts, and that is higher than normal at night. So far today I have not had issues, today was a very cloudy day and the batteries only got up to 55% hoping tomorrow will be a better day. All my voltage and wiring are correct and I had the system up and running for 15 months prior to these inverters with growatts in parallel. I only have one, that I know of 1 NG bond in one of my panels which is where my inverters combine before going to my main panel. I did some testing for neutral bond that Filterguy asked me to do and the consensus was that no NG bond on the previous inverters haven't tested with these, I bring this up because maybe if at some point there is a bond then that would create a NG loop maybe that could be causing the issues I have idk.
Edit.
Another thing is that the previous inverters would do the outage multiple times daily before and after the firmware update. I'm not sure if I mentioned before, on the previous units I had the same issues most where having with "61" however on mine it wasn't just a fault shown it would completely shut down the inverters (power off). When the outage issue I have the inverters do not turn off they stay on like nothing happened and the output just shuts off for 3 to 5 sec and comes right back no warnings or faults.