The cascade particles render though blocks when Effective is used along side Bliss. I have confirmed this happens with only Bliss (at least from the shaders I tested) and even with no other mods (except dependencies) installed.

Sodium 1.20.1-0.5.13 (Though it was happening on older versions as well)
Iris 1.7.6-1.20.1
Effective 2.3.2-1.20.1
Bliss - Most recent development as of March 5, 2025

I'm fairly sure there is a setting in bliss that can be toggled to fix this, however I can't remember what it is. I post this less in hope of a fix (keep going on 1.21.1 R4T), and more in the hope that someone will remember/ find the setting in Bliss that fixes this.

I tried with the alphas and the issue seemed to go away, unfortunately updating isn't an option for this modlist as Conquest Reforged (the heart of it) isn't updated.