I've made a temporary fix for this in the form of a CraftTweaker script that replaces the ritual of shaping:

<recipetype:arsomega:sigil>.removeAll();
craftingTable.addShapeless("sigil_water_active", <item:arsomega:sigil_water_active>, [<item:arsomega:ritual_shaping>, <item:ars_nouveau:water_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_fire_active", <item:arsomega:sigil_fire_active>, [<item:arsomega:ritual_shaping>, <item:ars_nouveau:fire_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_earth_active", <item:arsomega:sigil_earth_active>, [<item:arsomega:ritual_shaping>, <item:ars_nouveau:earth_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_air_active", <item:arsomega:sigil_air_active>, [<item:arsomega:ritual_shaping>, <item:ars_nouveau:air_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_binding_active", <item:arsomega:sigil_binding_active>, [<item:arsomega:ritual_shaping>, <item:arsomega:demonic_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_alchemy_active", <item:arsomega:sigil_alchemy_active>, [<item:arsomega:ritual_shaping>, <item:arsomega:alchemy_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_life_active", <item:arsomega:sigil_life_active>, [<item:arsomega:ritual_shaping>, <item:arsomega:life_essence>, <item:arsomega:chalk>]);
craftingTable.addShapeless("sigil_nature_active", <item:arsomega:sigil_nature_active>, [<item:arsomega:ritual_shaping>, <item:arsomega:nature_essence>, <item:arsomega:chalk>]);

To add it, simply put it in a ZenScript file of your choice.

do you have any other useful information? can you reproduce it without all the other mods?

that crash just means something froze, and a single tick took a whole minute. I have no way of knowing what caused it or even if it was caused by the ritual of shaping.

It happened immediately after I put down the last chalk for sigil of alchemy.

I don't think I can use spark for this, so sad.

might not be able to I guess, if it's completely stuck

I'll try reproducing it again, however it's 4:31 AM and I don't feel like messing with my files atm.

huh, can you test if it happens in a new world?

I can test that, but first, second try on the server.

Seems... the bug has locked me out of my server.

Joining immediately loads the bugged ritual which crashes the server.

figured, something seems stuck in an infinite loop. I'll look and see if I can find it, but see if it happens on a new creative world.

oh wait this is on 1.19... huh

Yeah... the latest alpha release.

It's not like I didn't expect bugs (cough cough worn notebook titles) but uh, this one is quite bad.

oh, can you create a separate github issue saying witch worn notebook title is broken?

Which? Every.

I wouldn't be surprised if I goofed up something on the 1.19 version lol, it is probably an omega issue then

Almost every single omega one is goofed.

Which? Every.

lol, ok, that's funky

For example, patterns.

Hmm, didn't happen on the fresh world.

Yeah, it seems to only happen on the server.

This may be an incompatibility with a server-side mod.

I'm going to try without the performance mods rn.

Question is... which one?

oh, it could be, which of those do you have?

Chunky
Connectivity
FerriteCore
Radium
Spark
Starlight

These are the only ones I could see causing a problem.

Spark would be a weird one, though.

Right, you can also see the mod list. I have a mod for more advanced crash reports.

Oh, I have a great idea. Spark.

yea use spark to find the problem if possible, sometimes it helps lol

if you get a chance tomorrow, it's also worth checking if removing the performance mods fixes the problem or if it's still there without them.

Crashed.

For context, the ritual was in a running state and the game crashed the moment I put the last chalk in for the sigil of alchemy.

still same crash report? server watchdog?

Yes.

I haven't heard anyone else have issues and I have no idea what caused this.