Unstable Breach spawns in 100% unreachable area (Bug Report #3,552,305,121)

This happened with a map: an unstable breach spawned near the starting tile, but was in a zone entirely detached from the rest of the map. Both the minimap indicated its presence, as well as its icon appearing in the "Extra content" bar on the side, but there was no way to reach it.

• Bug Report ID: #3,552,305,121
  
  
• Reproduction: Potentially important factors here are that this was an entirely random breach appearance (no tablet or Atlas icon) and this was in an Azmerian Ranges map. The map in question was part of the "Rite of the Nameless" questline targets as well, and hence had Rituals.
  
  
• Screenshot: Attached is a screenshot showing the presence of the unreachable breach. The overlay map has been scrolled slightly to the left to make it clearer to see both the player's marker as well as that of the breach. The map is otherwise 100% clear, as can be noted from the Monsters Remaining as well as all other "Extra Content" icons being marked off.