icu4j returns currency code instead of symbol

Background

I have an Android application where I want to format an integer value as a currency string depending on the ISO code and current locale. I'm using ICU library 1.8.1 for that.

For example, if I have a value 75 and the ISO code is "USD", I want to see "$75" on US locale, but "USD75" on French locale.

Problem

The problem is that I always see "USD75" even when I explicitly set the locale to US. I thought the problem is in my NumberFormat currency instance, but then I tried to simply get the currency symbol and noticed that it's incorrect. For some reason getSymbol() method always returns currency code.

public void test() {
    Locale.setDefault(Locale.US);
    String theISOCode = "USD"
    Currency currency = Currency.getInstance(theISOCode);

    currency.getCurrencyCode(); // "USD". This works as expected
    currency.getSymbol(); // "USD". This looks weird.. Shouldn't it be "$"?
    currency.getSymbol(Locale.US); // "USD". Same here, I expect it to be "$"
    currency.getSymbol(ULocale.US); // still "USD"
}

I also checked this link: Java: Currency symbol based on ISO 4217 currency cod. It seems my app works a bit differently. Not sure if it's a bug in the library.

Question

It makes sense to me that currency.getSymbol() returns "USD" if your locale is Locale.FRANCE. But why does it return "USD" when my locale is Locale.US? Would be great if I could find a solution without switching the library.

The issue turned out to be a bug in the library. After updating the version the issue got resolved. Thanks @Omid for looking into this.