Program: 70582
Project: 70582
Buggy source:
public void leaderboard_load_player_score(final String leaderboard_id,final int time_span){
  if (is_connected()) {
    AsyncTask<Void,Void,Void> task=new AsyncTask<Void,Void,Void>(){
      @Override protected Void doInBackground(      Void... params){
        LeaderboardsClient leaderboardsClient=get_leaderboard_client();
        leaderboardsClient.loadCurrentPlayerLeaderboardScore(leaderboard_id,time_span,LeaderboardVariant.COLLECTION_PUBLIC).addOnFailureListener(new OnFailureListener(){
          @Override public void onFailure(          @NonNull Exception e){
            String message=e.getMessage();
            Log.e(TAG,"String_Node_Str" + message);
            GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{message});
          }
        }
).addOnCompleteListener(new OnCompleteListener<AnnotatedData<LeaderboardScore>>(){
          @Override public void onComplete(          @NonNull Task<AnnotatedData<LeaderboardScore>> task){
            if (task.isSuccessful()) {
              AnnotatedData<LeaderboardScore> result=task.getResult();
              LeaderboardScore leaderboardScore=result.get();
              GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{leaderboardScore.getRawScore(),leaderboardScore.getRank()});
            }
 else {
              Log.e(TAG,"String_Node_Str" + task.getException());
              GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{task.getException().getMessage()});
            }
          }
        }
);
        return null;
      }
    }
;
    task.execute();
    Log.i(TAG,"String_Node_Str");
  }
 else {
    String message="String_Node_Str";
    GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{message});
  }
}

Fixed version (ground truth):
public void leaderboard_load_player_score(final String leaderboard_id,final int time_span){
  if (is_connected()) {
    AsyncTask<Void,Void,Void> task=new AsyncTask<Void,Void,Void>(){
      @Override protected Void doInBackground(      Void... params){
        LeaderboardsClient leaderboardsClient=get_leaderboard_client();
        leaderboardsClient.loadCurrentPlayerLeaderboardScore(leaderboard_id,time_span,LeaderboardVariant.COLLECTION_PUBLIC).addOnFailureListener(new OnFailureListener(){
          @Override public void onFailure(          @NonNull Exception e){
            String message=e.getMessage();
            Log.e(TAG,"String_Node_Str" + message);
            GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{message});
          }
        }
).addOnCompleteListener(new OnCompleteListener<AnnotatedData<LeaderboardScore>>(){
          @Override public void onComplete(          @NonNull Task<AnnotatedData<LeaderboardScore>> task){
            if (task.isSuccessful()) {
              AnnotatedData<LeaderboardScore> result=task.getResult();
              LeaderboardScore leaderboardScore=result.get();
              Log.d(TAG,"String_Node_Str" + leaderboardScore.getRawScore() + "String_Node_Str"+ leaderboardScore.getRank());
              GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{leaderboardScore.getRawScore(),leaderboardScore.getRank()});
            }
 else {
              Log.e(TAG,"String_Node_Str" + task.getException());
              GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{task.getException().getMessage()});
            }
          }
        }
);
        return null;
      }
    }
;
    task.execute();
    Log.i(TAG,"String_Node_Str");
  }
 else {
    String message="String_Node_Str";
    GodotLib.calldeferred(instance_id,"String_Node_Str",new Object[]{message});
  }
}