Postgresql - "in with union" is missing parenthesis

[magnuskvalheim]

Related version 3.3.0.beta2.

Was testing beta2 and looks like it's missing a parenthesis - at least in my testing...
Postgresql 9.3.1

SMovella smovella = SMovella.movella;
SCoAuthor sco = SCoAuthor.coAuthor;

ListSubQuery<Long> subMovellaByCoAuthorId = new SQLSubQuery()
    .from(sco)
    .where(sco.userId.eq(userId))
    .list(sco.userId);

ListSubQuery<Long> subMovellaByAuthorId = new SQLSubQuery()
    .from(smovella)
    .where(smovella.userId.eq(userId))
    .list(smovella.userId);             

List<Movella> mList = new JPASQLQuery(getEm(), PostgresTemplates.builder().printSchema().build())
    .from(smovella)
    .where(smovella.userId.in(new SQLSubQuery().union(subMovellaByAuthorId, subMovellaByCoAuthorId)))
    .list(QMovella.movella);

Generates SQL

select movella.*
    from movella.movella movella
    where movella.user_id in (select movella.user_id
    from movella.movella movella
    where movella.user_id = $1)
    union
    (select co_author.user_id
    from movella.co_author co_author
    where co_author.user_id = $2)

This is failing with "each UNION query must have the same number of columns at character 167"

The query can execute if the union is enclosed in parenthesis.

select movella.*
    from movella.movella movella
    where movella.user_id in ((select movella.user_id
    from movella.movella movella
    where movella.user_id = $1)
    union
    (select co_author.user_id
    from movella.co_author co_author
    where co_author.user_id = $2))

[magnuskvalheim]

Great, High fives :-)

[timowest]

Released in 3.3.0