A DESCRIPTION OF THE PROBLEM :
I have an subclass of AccessibleState that overrides the following method from AccessibleBundle thus:

   @Override
   public String toDisplayString(Locale locale) {
      return toDisplayString("rob.resources", locale);
   }

in order to return a string from my own resource bundle. In 1.8.0_152 and earlier this works. In 1.8.0_161 and later it fails thus:

loadResourceBundle: java.util.MissingResourceException: Can't find bundle for base name rob.resources, locale en_GB

As far as I can see this is caused by a change to the classloader used internally in java.util.ResourceBundle,

REGRESSION : Last worked in version 8u161

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Build and run the attached class. It requires the 'resource.properties' in the same package, i.e. rob/R.class and rob/resources.properties

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
javac rob/R.java
java rob.R

R:hello

ACTUAL -
javac rob/R.java
java rob.R
loadResourceBundle: java.util.MissingResourceException: Can't find bundle for base name rob.resources, locale en_GB
R:key1


---------- BEGIN SOURCE ----------
rob/R.java:

package rob;

import java.util.Locale;
import javax.accessibility.AccessibleState;

public class R extends AccessibleState {
   public R(String key) {
      super(key);
   }

   @Override
   public String toDisplayString(Locale locale) {
      return toDisplayString("rob.resources", locale);
   }

   public static void main(String[] args) {
      final R r = new R("key1");
      System.out.println("R:" + r);
   }

}

rob/resources.properties:

key1=hello




---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
None known.

FREQUENCY : always