Large File Import fails with WSREP: transaction size limit exceeded

Loading a delimited text file fails in mysql LOAD DATA INFILE query or using the mysqlimport program. Test file is 17 million rows and 4.7GiB. Error thrown is

[Warning] WSREP: transaction size limit (2147483647) exceeded: 2147483648
[ERROR] WSREP: rbr write fail, data_len: 2147483648

I can fix it by setting the wsrep_load_data_splitting='ON' variable, but the documentation says this was deprecated in 10.4.3 because of a new continuous replication change. I'm on 10.4.7 and having this set to off does not work. Not sure if I have a setting in my config breaking this feature, or if it is not yet running fully.

My mariadb.cnf:
[mysqld]
#mysql settings
datadir = /var/lib/mysql
innodb_buffer_pool_size = 15GB
innodb_buffer_pool_instances = 35
innodb_log_file_size = 2G
innodb_log_buffer_size = 16M
innodb_read_io_threads = 64
innodb_write_io_threads = 64
innodb_stats_on_metadata = 0
sql_mode="STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION"
default_storage_engine=innodb
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
character-set-client-handshake = false
ft_min_word_len = 3
long_query_time = 5
lower_case_table_names = 1

[galera]

1. Mandatory settings
   wsrep_on=ON
   wsrep_provider=/usr/lib/galera/libgalera_smm.so
   wsrep_cluster_address=gcomm://10.10.10.11,10.10.10.12
   wsrep_node_address=10.10.10.11
   wsrep_sst_receive_address=10.10.10.11
   wsrep_node_name=Galera-Node1
   binlog_format=row
   wsrep_load_data_splitting= ON
   default_storage_engine=InnoDB
   innodb_autoinc_lock_mode=1
   wsrep_retry_autocommit=10
   wsrep_slave_threads=32
   wsrep_provider_options=gcache.size=2G
2. Custom settings
   wsrep_cluster_name="Galera-Cluster1"
   wsrep_sst_method = mariabackup
   bind-address=10.10.10.11
   skip-name-resolve

performance_schema = ON
innodb_flush_log_at_trx_commit = 0
wsrep_notify_cmd = notify