revertAll() on a QSqlTableModel does not seem to revert changes if an sql error occured

Removing any row in a tablemodel (with SQLite) will fail if I have
before tried to remove a row referenced with an ON DELETE RESTRICT constraint.

It seems like revertAll() does not clear the models "cache" and it tries
to resubmit the failing remove. Even a select() afterwards does not help.

QSqlQuery q;
q.exec("PRAGMA foreign_keys=1");

q.exec("CREATE TABLE tbl1 (id INTEGER PRIMARY KEY)");
q.exec("CREATE TABLE tbl2 (fk INTEGER NOT NULL CONSTRAINT fk
REFERENCES tbl1 (id) ON DELETE RESTRICT)");

q.exec("INSERT INTO tbl1 (id) VALUES(1)");
q.exec("INSERT INTO tbl1 (id) VALUES(2)");
q.exec("INSERT INTO tbl2 (fk) VALUES(1)");

QSqlTableModel m;
m.setTable("tbl1");
m.select();
m.setEditStrategy(QSqlTableModel::OnManualSubmit);

qDebug() << m.rowCount();
qDebug() << m.removeRow(0);
qDebug() << m.submitAll();
qDebug() << m.lastError().text();

m.revertAll();

qDebug() << m.rowCount();
qDebug() << m.removeRow(1);
qDebug() << m.submitAll(); //fails. without rows 32-34 it wont fail
qDebug() << m.lastError().text();