Ritual altars vs abyss/expedition

Not gamebreaking

I had a ritual pillar yesterday that I could not interact with - probably because it sat right on an expedition encounter. Finishing the Expedition did not change anything. The pillar was just unclickable. I managed to kill all monsters but 2 in the area (which I could not find) and the pillar stayed bugged.

Today I had an abyss end close to a ritual pillar and the abyss trickled out some monsters towards the end and then just ended without expanding, producing a chest or a spire. I had the impression that it just couldn't find room to behave normally there. Abyss holes often have bugs btw. You very rarely get invincible monsters stuck in abyss holes. spires often produce infinite spawns.