Is the Atrium entrance always in Fumarole now?

[CrimsonStrider]

Since the introduction of the fumarole biome, I've only seen the entrance there.

Previously it would usually spawn in Green Mush, and occasionally in other areas.

Is the entrance set to always spawn in Fumarole at this point in time?

And where is the entrance not able to spawn? Sometimes I see a tentapillars spawn in weird areas that I wouldn't normally check, like in grassy areas near a cave exit point.

[namhai]

No, ever since the introduction of fumarole, I have seen atrium tentapillars appear in green mushtree and guano as well

[O_Atoba_Azul]

Are you, perchance, playing with mods? (e.g Uncompromising Mode?)
Otherwise, though, it spawns exclusively in the green mush forest, guano biome and fumarole