Lately I've noticed MC would just sometimes crash at startup and throw a "A fatal error has been detected by the Java Runtime Environment", and when it did start, the MOJANG logo would appear as a soup of letters before correcting itself. I've narrowed it down to this mod. The occasional crashes seem to only happen when Sodium and Iris are installed as well, this was hard to pinpoint as I had to quit and restart MC several times to trigger the crash and it seemed to happen only when these two mods were installed, so I could be wrong.

Here is what the logo briefly looks like when CICADA is installed:

MC doesn't make a crashlog but the JVM does output something I think maybe useful:
hs_err_pid12656.log

Log cites the problematic frame as "nvoglv64.dll+0xb4513c" so it could be related to NVIDIA drivers, but my OS is freshly installed so I don't think it's a problem with my PC.

I'm having the same issue and can confirm it's not an NVIDIA issue as I have an AMD GPU.
I'm not sure if there's any useful info in my logs, but here's one from a force crash right after the game loaded.
https://mclo.gs/E3YywfX

Should be fixed in latest update, are you able to confirm?

Seems fixed!