QSqlQuery.setForwardOnly() causing next() to return false.

[Lex003]

I have upgraded our application from Qt5.3.1 to 5.15.10. The following code worked with 5.3.1 and no longer in 5.15.10.
*```
QString q("SELECT batch_name FROM batch_names");
qDebug() << "Query" << q;
QSqlQuery query(q,database);
qDebug() << query.numRowsAffected();
query.setForwardOnly(true);
if(query.lastError().type() == QSqlError::NoError)
{
if(query.first())
{
do
{
qDebug() << query.value(0);
ui.sTimeComboBox->addItem(query.value(0).toString());
} while (query.next());
}
}

The output for this is:
        Query "SELECT batch_name FROM batch_names"
        3
        QVariant(QString, "B1")
query.next() returns false after the first record.

If I remove the query.setForwardOnly(true) line then the output is:
        Query "SELECT batch_name FROM batch_names"
        3
        QVariant(QString, "B1")
        QVariant(QString, "B2")
        QVariant(QString, "B3")

The database is Postgres and the same query in pgAdmin returns:
![a1f281f7-1d0f-4a79-98ae-861571d0cc96-image.png](https://ddgobkiprc33d.cloudfront.net/b58b9d16-d96d-4196-9ebe-29960a0faa13.png)

[Christian Ehrlicher]

Please use correct code tags in your post so we can actually read your code. Also please provide a minimal, compilable example. setForwardOnly() works fine for me for postgres since ages.