In reply to amelbeabk:
I'm talking about the separate JVMs.
Hello I have a problem here. It seems that AdoptOpenJDK's OpenJ9 does not work for 1.16.4 and crashes. However, with OracleJDk or GraalVM it works fine. Did minecraft do something about this?
P.S. AdoptOpenJDK used to work in 1.12.2.
I think that is due to 1.16.1 mods. Those don't work in 1.16.2/3/4.