So I have this code excerpt (a minimal reproduction, from a much larger project, and blocking issue). It leverages Java 22 (preview)‘s structured task scope in combo with virtual threads:

playground.java

void main() throws InterruptedException {
  final var NAME = ScopedValue.<String>newInstance();
  try (var ts = new StructuredTaskScope<>()) {
    ScopedValue.runWhere(NAME, "haha", () -> {
      ts.fork(() -> {
   // ^^^
   // java.util.concurrent.StructureViolationException: Scoped value bindings have changed
        return null;
      });
    });
    ts.join();
  }
}

Using Java 22, you can run it with java --enable-preview --source 22 playground.java.