Malformed packet SQL=LOAD DATA LOCAL INFILE... ERROR 2027

LOAD DATA LOCAL INFILE causing error 2027 Malformed packet for one of ours php application.
Application works without any problem directly connected to MariaDB master server.
Maxscale log has warning entries about "unknown prepared statement" but we don`t use any prepared statements at all.

I tryed disable use_sql_variables_in=master or route all queries directly to master using Hintfilter and Consistent Critical Read Filter but with same result. I also run in same issue with maxscale 2.4.17

Log entries(at same time):
warning: (1) (Splitter-Service) Client requests unknown prepared statement ID '1654551140' that does not map to an internal ID
warning: (1) (Splitter-Service) Using unknown prepared statement with ID 0
error : (1) (master) Write to Backend DCB 10.1.1.121 in state DCB::State::POLLING failed: 104, Connection reset by peer
warning: (1) (Splitter-Service) Client requests unknown prepared statement ID '539915370' that does not map to an internal ID
warning: (1) (Splitter-Service) Using unknown prepared statement with ID 0
error : (1) [readwritesplit] (Splitter-Service) Lost connection to the master server, closing session. Lost connection to master server while connection was idle. Connection has been idle for 0 seconds. Error caused by: #HY000: Lost connection to backend server: connection closed by peer (master). Last close reason: <none>. Last error: Got packets out of order

conf:
[maxscale]
threads=8
syslog=1
maxlog=0
log_notice=1
load_persisted_configs=false
local_address=10.1.1.23
auth_connect_timeout=20s
users_refresh_time=10s
max_auth_errors_until_block=100
admin_gui=0

[master]
type=server
address=10.1.1.121
port=3306
protocol=MariaDBBackend

[slave-1]
type=server
address=10.1.1.14
port=3306
protocol=MariaDBBackend

[Monitor]
type=monitor
module=mariadbmon
servers=master,slave-1
user=xxx
password=xxx
monitor_interval=3s
assume_unique_hostnames=OFF
master_conditions=none
slave_conditions=linked_master
ignore_external_masters=ON

[Splitter-Service]
type=service
router=readwritesplit
servers=master,slave-1
user=xxx
password=xxx
#session_track_trx_state=1
max_slave_replication_lag=5s
max_sescmd_history=500
slave_connections=1
master_accept_reads=true
use_sql_variables_in=master
causal_reads=local
causal_reads_timeout=1s

[ReadWrite-Listener]
type=listener
service=Splitter-Service
protocol=MariaDBClient
socket=/run/maxscale/maxscale.sock