I think it is linked to issue8482. Could you confirm that versions having this change are no more affected?

sao version 5.0.35
and I can test it on trunk.

It will be good to have the exact version number and if you can test on trunk.

version 5.0 of sao is in use

Which versions of sao has been tested?

While using on_change_with, the one2many is not updating automatically.
It is getting updated after saving.

@fields.depends(
    'test',
)
def on_change_with_critearea(self):
    vals = []
    if self.test:
        for test_critearea in self.test.critearea:
            vals.append({
                'name': test_critearea.name,
                'lower_limit': test_critearea.lower_limit,
                'upper_limit': test_critearea.upper_limit,
            })
    return vals

The one2many should update after selecting the test type (in screenshot attached).
Only blank spaces are showing.

Note- The same is working fine in gtk-client.