had that happen too, even with my own modlist. havent been able to pinpoint it

same, it breaks everything. could not solve the issue after hours of debugging

I found one mod (Rimworld Westernization Project) that was causing these, so far as I can debug. It'll be dropped from the modlist shortly. Little sad I liked the factions, but we can't have misbehaving cannons.

Chucked two malbehaving mods, issue appears to be gone