Refactoring extraction methods leads to inconsistent code behavior

[provide a description of the issue]

Environment

Operating System: Windows11
JDK version: 17
Visual Studio Code version: 1.88
Java extension version: 1.29

Steps To Reproduce

1. select "switch (value) {...return result;"
2. click “Refacator-Extract to method”

class ExtractMethodTest {
private final int value;

public ExtractMethodTest(int value) {
this.value = value;
}

public synchronized int calculate() {
int result;
// extract method
switch (value) {
case 1:
result = value * 2;
break;
case 2:
result = value * 3;
break;
default:
result = value * 4;
break;
}
return result;
// end
}
}

refactoring result:

Reason: Local variables have been added to the extraction method, and if the inline method refactoring is performed, it will not match the behavior of the original code

Expected behavior: Check before and after refactoring and provide warning prompts

En el informe no se menciona ningún archivo de código fuente ni ninguna prueba. Reproduce el caso de Extract to method en Windows 11 con JDK 17 y compara después el comportamiento original, el extraído y el refactorizado inline. Se considera terminado cuando se detecta un comportamiento incoherente y se muestra una advertencia adecuada antes o después del refactoring.