Not exactly sure on that.
It seems the Victron Multiplus II does not separate in and out neutral (produces to the line, no galvanic separation):
View attachment 64621
We had a good thread testing things out in an LVX-6048 real hybrid inverter where the AC in neutral had no connection to AC out neutral.
Can this not be tested by simply disconnecting AC, and operating off grid? Once the unit has no incoming connection to neutral or to ground or to both then any continuity N - G must occur in the unit. Correct? Only AC L + N needs to be removed then, and G remains. Without G there is no 0V...
diysolarforum.com
(but that unit I think is broken, so not exactly sure about the results)