Invalid conversion when selecting array

When issuing a query to select array from table in H2 database in teiid such as:

SELECT (a,b) FROM y;

a,b are both strings.
it throws the following error:

Error: TEIID10076 Invalid conversion from type class java.lang.Object with value '[Ljava.lang.Object;@30b0a27' to type class [Ljava.lang.String;

When issuing this query against H2 directly it works without error.
I find the issue when testing TEIID-4380, teiid issues such a query when building the response for deep insert.