Submitting on behalf of Francesco Nigro:

https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/Thread.Builder.html#name(java.lang.String,long) enable users to create named Thread(s), but the existing code is passing an integer constant type to a VarHandle on a long field, which is sensitive to its signature type and causing it to not be correctly optimized.