HotSpot (JDK8) fails to output the correct data when calling the function Locale

ADDITIONAL SYSTEM INFORMATION :
Ubuntu 18.04 x86_64

A DESCRIPTION OF THE PROBLEM :
When calling the function `Locale getDisplayCountry(Locale inLoc)`, HotSpot (JDK8) cannot output correct data according to the argument `inLoc`.

In the following test case, the language environment is `Finnish`, but HotSpot (on JDK8) incorrectly outputs `Finland` in `English` environment. The expected result should be `Suomi`, as shown in HotSpot (on JDK11).

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Suomi
ACTUAL -
Finland

---------- BEGIN SOURCE ----------
public class Test {
    public static void main(String[] args) throws Exception {
        Locale fiLocale1 = new Locale("fi", "FI");
        System.out.println(fiLocale1.getDisplayCountry(fiLocale1));
    }
}
---------- END SOURCE ----------

FREQUENCY : always