ConstantConditions warning not working properly

Given the following sample code:

public static void test(Object value) {
    if (value instanceof Integer) {
        value = Long.valueOf((Integer) value);
    }
    System.out.println(value);
}

The IDE will warn that v1 is already assigned to that value, but it is not, this code will change the type.

I am using Android Studio, if anyone can test this with the latest IntelliJ to see if it happens the same I will be grateful.

Android Studio 3.5
Build #AI-191.8026.42.35.5791312, built on August 9, 2019
JRE: 1.8.0_202-release-1483-b03 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0