Prepared statement error in maxscale(2.4.2)

When using prepared statement syntax through maxscale, error code [1295] : "This command is not supported in the prepared statement protocol yet"error occurs.
Since the error does not occur when executing directly attached to the db, it is assumed to be a maxscale version issue, so after upgrading to maxscale 2.5.11, the prepared statement syntax was executed normally.
Is the error occurring because the processing method is different in the internal mechanism of version 2.4 and 2.5?
Please analyze which part is different and causes the error.