I’m pretty sure you’re right. I’m on PlayStation and I have the same issue with a few locations on Siptah. The plants around my main base have done this same thing since I first arrived on the server back when the expansion was released. No updates, no restarts, nothing will fix it. However, most other areas on the map don’t have this issue. FYI, I’m also playing on official, so nothing has been changed on the server to affect this, and it occurred before I even started building, so loading of detailed builds or tons of thralls has no affect on it. It’s just always that way, and only affects the plants.