There are a lot of people theorizing that this is directly related to recent changes in the Minecraft codebase.
For many people working in the Minecraft ecosystem, these changes are long overdue! The game has been stuck on an old build of Oracle JRE 8 for years to maintain compatibility with older systems. Many projects have already stated they’re upgrading to Java 11 (Paper, Velocity) for the coming Minecraft release.
Wow, this brings back memories. MSJVM 2.0?