Why Mercenary Mode Hate Me

Every time i play Alliance toon with the mercenary mode ON, my game crashes (Error 132 Fatal exception) if i get grouped with horde. Then when i log back in i will have the Deserter debuff for 15 mins and unable to communicate with other players ingame via /s , /y, /bg, or /p.
Do other people also get similar crashes when playing with mercenary mode? what to do to counter this issue? this happens to me every BG i get "merced". I ve only started noticing the issue after i faction change my toon to alliance and start playing BGs there recently

https://i.imgur.com/9FwBmM2.jpg
https://i.imgur.com/8oHp11V.jpg

Also when i get "Merced" my racials also change to Undead one

https://i.imgur.com/8BaZyrK.jpg
Will of the Forsaken for a human warlock

https://i.imgur.com/WXoejTB.jpg
Cannibalize for a human warlock

Ingame GMs hav asked me to report it in bugtracker, but ppl who report the bug a long time ago hav the reports dismissed.
Currently playing with the Mercenary Mode turned OFF.

disable all of your addons before to queue BG and see if this issue still occurs (in case you join as horde)

Tried it all. Even Downloaded the game again.

weird.

I have also experience that if crash/DC during mercenary mode -> you get racial of opposite faction :https://www.warmane.com/account
But it got somehow solved by causing deserter -> you get out of BG

The new/recent "Bug" is that you get deserter -> but you remain in BG

That said, about the reason why you get DC/crash, what kind of wow client are you using ? the one with "standard/old" model or the one with new model?

I've downloaded game from the site. When i made the tickets in-game ,GM also asked whether i am using any wow model. i am playing without any external modifications. As u can see from the Screenshots i am getting deserter debuff > unable to speak/communicate in the bg> getting undead racials , all these for literally every BG i keep playing with Mercenary mode ON