I'm reporting a bug related to the Containment Scarab and the Idol System for the Phrecia League

If you use a Containment Scarab, equip a Legendary Idol that does not spawn Scarabs on the Idol System, and select the Blue King on the Map Device, the Blue King Altar will never spawn in your maps. If you do not equip this small Legendary Idol, the Blue King Altar will spawn six times stably at a fixed probability.