On linux, the End Portal Rays effect does not seem to work. I thought it might be related to the fact that it's not supported on MacOS, but other non-MacOS effects (such as End Crystal Vortex) are working fine, so I'm unsure if it's the same issue.

Iris 1.8.8, MC 1.21.4
OS: Fedora 41

Let me know if there's any other info that would be useful.

Turns out I didn't have advanced colored lighting on in Complimentary performance settings and that was it, my bad. (Maybe description of the effect should say that's needed?)

Already fixed in the next update. ACL have to be enabled for it (though it's preferred as it looks cool)