in theory it shouldn't be possible with the current code but we should have at least a test for this situation:

value class Test {
    static String s0;
    String s;
    String ss;

    Test(boolean b) {
        s0 = null;
        s = s0; // no local proxy variable for s0 as it is static
        ss = s;
        super();
    }

    public static void main(String... args) {
        Test t = new Test(true);
    }
}