Failing SQL Feature:

ROWS FROM, which is used to combine multiple set-returning functions (SRFs) into a single FROM item

Docs here

SQL Example:

SELECT *
FROM ROWS FROM (
    generate_series(1,3),
    generate_series(10,12)
) AS t(a,b);

Parsing error:
ParseException: Encountered: <K_FROM> / "FROM", at line 2, column 11, in lexical state DEFAULT.