So, Sandworms are spawning on transition into any desert area. At level 4, I got only 4 lesser ones. So, I ran. As far and fast as I could. Through a band of bandits, who kindly killed 3 instead of me. The 4th one was more resilient and chased me across 3-4 zones, up the stairs in Conclave territory, into the cave, and perused me well into the veiled forest, where it caught me. The Bug, is that they seemed able to climb stairs, traverse stone floors, and chase me down in the Misty Forest without any problems. Across 3-4 zones worth. From Blackwell all the way to the forest. Maybe I should bow down to our new Sandworm Overlords and just not leave Mistlocke, ever...but this seemed like a bug, or at the very least, might need balancing? I saw not a single PC, so I do not think anyone else was causing the terminator worm spawn.
-AGOTFANBOI
PC Name-Rurik Heidrunnar- Time- 2 minutes prior to this posting.
Wait until you see the Greater sandworms!
That'll teach you to leave your spice extractor on for too long.
I dont think there is any way to prevent a monster from leaving an area.