hi,
connection is dropped by MariaDB when using maxscale while all works fine if connecting directly to the db.
connection is from an Azure VM:
OS: Windows Server 2022 Datacenter
MariaDB client: 11.2.2 and also tested with 11.1.4

Maxscale server:
MXS version: 23.08.03
OS: Red Hat Enterprise Linux release 8.9 (Ootpa)

Database server:
MariaDB version: 10.11.8-MariaDB-log
OS: Red Hat Enterprise Linux release 8.9 (Ootpa)

all MariaDB products are community

below the log info from maxscale (no error)
2024-02-12 14:37:02 info : (295) [MariaDBProtocol] Connection attributes: _os=Windows _client_name=libmariadb _pid=10856 _server_host=10.0.90.222 _platform=AMD64 _client_version=3.3.8 program_name=mysql _thread=9748
2024-02-12 14:37:02 info : (295) Found matching user 'JR007232'@'10.%' for client 'JR007232'@'10.211.0.13' with sufficient privileges.
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Target connection counts:
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); current operations : 0 in mariadb1 Master, Running
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); current operations : 0 in mariadb2 Slave, Running
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); current operations : 0 in mariadb3 Slave, Running
2024-02-12 14:37:02 info : (295) (mariadb1); Sending proxy-protocol header 'PROXY TCP4 10.211.0.13 10.0.90.223 49881 3306' to server 'mariadb1'.
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Connected to 'mariadb1'
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Selected Primary: mariadb1
2024-02-12 14:37:02 info : (295) (mariadb2); Sending proxy-protocol header 'PROXY TCP4 10.211.0.13 10.0.90.224 49881 3306' to server 'mariadb2'.
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Connected to 'mariadb2'
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Selected Replica: mariadb2
2024-02-12 14:37:02 info : (295) (mariadb3); Sending proxy-protocol header 'PROXY TCP4 10.211.0.13 10.0.90.225 49881 3306' to server 'mariadb3'.
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Connected to 'mariadb3'
2024-02-12 14:37:02 info : (295) [readwritesplit] (SplitterService); Selected Replica: mariadb3
2024-02-12 14:37:02 info : (295) Started SplitterService client session [295] for 'JR007232' from 10.211.0.13 on 'Worker-03'
2024-02-12 14:37:02 info : (295) Connected to 'mariadb1' with thread id 24560541
2024-02-12 14:37:02 info : (295) Connected to 'mariadb3' with thread id 26979114
2024-02-12 14:37:02 info : (295) Connected to 'mariadb2' with thread id 26979221
2024-02-12 14:37:02 info : (295) Authentication to 'mariadb1' succeeded.
2024-02-12 14:37:02 info : (295) Authentication to 'mariadb3' succeeded.
2024-02-12 14:37:02 info : (295) Authentication to 'mariadb2' succeeded.

attached is the tcpdump and an audit log image

After connecting when any command is tried (select,show,etc.) the client gets the following error:
ERROR 2013 (HY000): Lost connection to server at 'reading authorization packet', system error: 0

All works fine if Maxscale is bypassed and client connects directly to the db