Table value constructor does not work in self join

The following statement does not work:

WITH t1(wert) AS (VALUES (1), (2))

SELECT *

		FROM t1 AS tab1

	INNER JOIN t1 AS tab2

	ON tab1.wert = tab2.wert;

It should give the table

1 1
2 2

since self-joins are not forbidden.
But instead of the correct result, an error message is given:

SQL Error (1054): Unknown column 'tab2.wert' in 'on clause'.

Note that table value constructors are documented here.

The error may occur in other versions besides 10.4 too.