When crafting with the altar and infuser, the visuals and sound will keep repeating even after the crafting has finished. On minecraft version 1.16.5, Astral Sorcery version 1.13.11, forge version 36.1.24. Breaking the altar or re-entering the world fixes it. The completion sound also still happens.

979-785ac6077ce9.mp4

Check your logs, probably duplicate of #1816

Can confirm, same issue here.

This issue also seems to happen with other effects in the mod. for example, i broke a celestial collector crystal but it's effect is still showing

I believe it's a different issue. First of all, no crash, second of all here's the section of relevant log. https://pastebin.com/eQcywK2f Note that this also happens with astral sorcery alone, it's not a mod conflict in the pack I'm using. I'll get the log of the base astral world as well if you need it.

I think he means the root cause of both issues are the same. because some of the things in your log are very similar to what caused my crash