first REPLACE INTO command from a batch is ignored

When I issue a batch REPLACE INTO statement (i.e. with PreparedStatement.addBatch() / executeBatch()) the very first set of parameters is ignored. This happens regardless of whether it would result in inserting or updating.

E.g. if I prepare `replace into test (id, active) values (?, ?)` with parameter sets (1, true), (2, true) and (3, true), the first one (1, true) is ignored:

• If there is a row with id=1, its `active` column is not updated;
• If there is no such row, it is not inserted;
• For all subsequent parameter sets it works as expected;
• It is really about the first parameter set, not e.g. the one with lowest `id`; if I reorder them, the one becoming first after reordering is ignored.

Note that other batch commands (INSERT INTO, UPDATE etc.) or REPLACE INTO executed as non-batch statement work as expected.