multiple loginctl sessions when using xrdp

Question

I have followed this answer https://askubuntu.com/a/1409120/376806 here, but I am having this issue.

Sometimes When I log in again using the same user. It creates multiple sessions. loginctl list-sessions, and at some point, a user is unable to log in unless I kill all sessions of that user, using sudo loginctl kill-user <username> or sudo loginctl kill-session <session-id>

Also, is there a way to connect to the same session every time a user reconnects? Multiple people use this computer at the same time and connect via Windows remote desktop utility.

Edit: Output of loginctl list-sessions

SESSION  UID USER    SEAT  TTY  
    523 1001 ctar          pts/0
    c17 1009 user1         
    c30 1012 user2        
    c64 1004 user3          
    c71 1003 user4         
    c76 1000 user5       
    c77 1002 user6          
    c78 1002 user6          
     c8  127 gdm     seat0 tty1
9 sessions listed.

You can see here that there are two sessions open for user user6 it keeps increasing and after some time I get forced disconnection when I try to connect again, the only solution is to terminate all sessions of the user then.

Host OS: ubuntu 22.04

Client: Windows Builtin and Remmina