regression in 3.x.y: nonparameterized batch "INSERT INTO products( name ) VALUES ( 'aaaa' )" fails

 running:

  SELECT version() as serverVersion

 Server version: [{serverVersion=10.5.4-MariaDB}]

 Driver version: 3.1.2

 running:

  DROP TABLE IF EXISTS products

 running:

  CREATE TABLE IF NOT EXISTS products (

    id       int unsigned AUTO_INCREMENT NOT NULL,

    name     varchar( 100 ) NOT NULL,

    created  datetime DEFAULT CURRENT_TIMESTAMP NOT NULL,

    PRIMARY KEY ( id )

  ) DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_ci

 running batch:

  INSERT INTO products( name ) VALUES ( 'aaaa' )

[ WARN] (main) Error: 1295-HY000: This command is not supported in the prepared statement protocol yet

Exception in thread "main" java.sql.BatchUpdateException: (conn=1336) This command is not supported in the prepared statement protocol yet

	at org.mariadb.jdbc.export.ExceptionFactory.createBatchUpdate(ExceptionFactory.java:181)

	at org.mariadb.jdbc.ClientPreparedStatement.executeBatchBulk(ClientPreparedStatement.java:179)

	at org.mariadb.jdbc.ClientPreparedStatement.executeInternalPreparedBatch(ClientPreparedStatement.java:115)

	at org.mariadb.jdbc.ClientPreparedStatement.executeBatch(ClientPreparedStatement.java:466)

	at test.MariaDB_Regression1.runBatch(MariaDB_Regression1.java:86)

	at test.MariaDB_Regression1.main(MariaDB_Regression1.java:106)

Caused by: java.sql.BatchUpdateException: (conn=1336) This command is not supported in the prepared statement protocol yet

	at org.mariadb.jdbc.export.ExceptionFactory.createBatchUpdate(ExceptionFactory.java:215)

	at org.mariadb.jdbc.client.impl.StandardClient.executePipeline(StandardClient.java:620)

	at org.mariadb.jdbc.ClientPreparedStatement.executeBatchBulk(ClientPreparedStatement.java:148)

	... 4 more

Caused by: java.sql.SQLException: (conn=1336) This command is not supported in the prepared statement protocol yet

	at org.mariadb.jdbc.export.ExceptionFactory.createException(ExceptionFactory.java:299)

	at org.mariadb.jdbc.export.ExceptionFactory.create(ExceptionFactory.java:370)

	at org.mariadb.jdbc.message.ClientMessage.readPacket(ClientMessage.java:134)

	at org.mariadb.jdbc.client.impl.StandardClient.readPacket(StandardClient.java:855)

	at org.mariadb.jdbc.client.impl.StandardClient.readResults(StandardClient.java:794)

	at org.mariadb.jdbc.client.impl.StandardClient.readResponse(StandardClient.java:713)

	at org.mariadb.jdbc.client.impl.StandardClient.executePipeline(StandardClient.java:571)

	... 5 more