Bug Report ID: #3812454140 Mire Map not spawning all strongbox monsters

Mire map has mechanics loading monsters I'm assuming out of bounds so don't actually spawn and brick the mechanic. Last time was a ritual, this time was a strongbox. To replicate, probably as simple as testing strongboxes on Mire.

Ritual issue had two overlap so one never got enough monsters to spawn to trigger it.

Screenshot below for strongbox mire with a fully cleared and complete map: