Assignment of a dict to to an existing node in Struct mode is raising a validation error.

[omry]

This should work:

def test_struct_dict_assign() -> None:
    cfg = OmegaConf.create({"a": {}})
    OmegaConf.set_struct(cfg, True)
    cfg.a = {"b": 10}
    assert cfg.a == {"b": 10}