user authentication not working in maxscale 2.4

[MySQL-Monitor]
type=monitor
module=mariadbmon
servers=server1,server2
user=maxscale
password=xxxxx
monitor_interval=10000

Throws error
error : [MariaDBAuth] [XtendWeb] Failed to connect to server 'server1' ([127.0.0.1]:13306) when checking authentication user credentials and permissions: 1045 Access denied for user 'maxscale'@'localhost' (using password: YES)

But
mysql -umaxscale -pxxxxx
works just fine

Pretty sure this is an issue with Maxscale 2.4 version as if I downgrade maxscale to 2.3, maxscale start with the same exact config