I have the same problem...

is there anyone who can solve this problem yet? lol

ok yall so basically its a bit complicated, but whenever you select to change weapon/armors you have to select ALL of the slots, example: boulder, unarmed, unarmed, unarmed, im used to just selecting the first on and changing it, but you actually have to select ALL of them or just the ones you want to make the variation too.

another mod i used to use that now crashes let you add/remove variants... why can't this mod too? i don't want to manually set each variation for each troop

so, it's complicated BUT you can do it to where there is only one variant:
-go to tavern, export troop tree
-go to and open with NP++ or similar
"C:\Program Files (x86)\Steam\steamapps\common\Mount & Blade II Bannerlord\Modules\exportname\ModuleData\troops.xml"
-edit where it says
<Equipments>
<EquipmentRoster>
<equipment slot="Body" id="Item.bandit_envelope_dress_v1"/>
<equipment slot="Leg" id="Item.wrapped_shoes"/>
</EquipmentRoster>
so that there is only one "EquipmentRoster" entry OTHER THAN the civilian=true entry

you should have ONE EquipmentRoster AND the EquipmentRoster civilian=true

-save and exit game, save and exit the xml

-open game and enable the exported list under "mods" in menu BEFORE launching game
-go to tavern, import tree
-you should have two "recruit" and two "elite recruit" options in the troops list, no idea why two.
(i just named one "zzz" and "zzzelite" in case i wanted them later or sthg)

of course, if you want more than 1 variant but not 4 specifically, just add/remove the
<EquipmentRoster>
<equipment slot="Body" id="Item.bandit_envelope_dress_v1"/>
<equipment slot="Leg" id="Item.wrapped_shoes"/>
</EquipmentRoster>
in the appropriate areas as needed.

nevermind all of that, the mod automatically fills in the variants you remove -_-

lol