[Modded] Streets - Kaban followers fail to spawn, PMCs fail to spawn with bosses enabled

I am encountering a strange issue with bot spawns that is limited to streets, where enabling bosses exclusively spawns Scavs, and Kaban only spawns with one additional sniper and no followers. Server console shows that neither USEC, Bear or Kaban followers are even loaded in as possible bot spawns:

/client/game/bot/generate data was: [{"Role":"assault","Limit":50,"Difficulty":"normal"},{"Role":"marksman","Limit":30,"Difficulty":"normal"},{"Role":"bossBoar","Limit":5,"Difficulty":"normal"},{"Role":"bossBoarSniper","Limit":5,"Difficulty":"normal"},{"Role":"gifter","Limit":5,"Difficulty":"normal"}]

Scav spawns also act like tagged and cursed is active (as in they zero in on my position after passing a certain distance threshold) despite the option not having been selected. Kaban followers not spawning makes it impossible to complete "The Huntsman Path - Big Game" and PMCs not spawning regularely impacts other quests as well.

All other maps work fine as far as bot spawns are concerned, this only happens with streets. Any advice on how to fix this woudl be appreciated.

Addendum:

The only way to get followers to spawn is to add them as supports, for some reason SPT is preventing regular escorts to spawn on streets.

Adding

"Supports": [

   {

      "BossEscortAmount": "3",

      "BossEscortDifficult": [

      "normal"

      ],

   "BossEscortType": "followerBoar"

   }

],

"Time": -1

to the boss entry spawns the defined number of followers without issues every time. Same goes for the snipers - the only way to get more than one sniper guard to spawn is to add them as supports.

Can someone from the team have a looked at this? Is this intended behaviour?