PC [BUG] Cinder Shard Nodes spawn in the pool of water in Volcano Dungeon's entryway

[Eryk601]

Cinder Shard Nodes very rarely spawn in the Volcano Dungeon's entryway, including (but not only) inside the pool of water which probably shouldn't be a thing.

I've seen them in the entryway twice or thrice before, I thought I was just lucky, but now when they spawned in the water I think something's wrong here.

I'm not sure if you'll be able to replicate this but just in case I'll include the following...
Seed: 287668832
In-game date of the screenshot: Year 3, Winter 24th

Edit #1:
Just ran into another cluster. (Year 3, Winter 27th)

Edit #2:
(Year 4, Spring 8th)

 

[imnvs]

Okay, no nodes should be spawning on that floor in the first place, let's be clear... and 3 of them? W. T. F?

Are you using any mods?

 

[Eryk601]

Okay, no nodes should be spawning on that floor in the first place, let's be clear... and 3 of them? W. T. F?

Are you using any mods?

Nope, I didn't touch any mods yet, but I was planning to after this playthrough.
3 is the smallest group I've seen so far. The previous clusters were 5+, just like with any other ore node in it's respective mines level, sometimes you're able to find a big concentration of them.