This is a small thing, and I'm not even exactly sure if you'll want to consider it as a bug.
When running

            IBar candle = candles[i];
            console.getOut().println(i + " " + candles[i] + " inside drawOutput for loop");

if we have 250 bars in total, then the 249th (current incomplete) bar's values will be without spaces inside the candles[i] array, and making it harder to read when debugging and displaying it on the messages tab.

This code prints every message on a new line:

long time = history.getBarStart(Period.TEN_SECS, System.currentTimeMillis());
List<IBar> bars = history.getBars(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, time - 50000, time);
IBar[] candles = bars.toArray(new IBar[bars.size()]);
for (int i = 0; i < candles.length; i++) {
IBar candle = candles[i];
console.getOut().println(i + " " + candles[i] + " inside drawOutput for loop");
}

There is a method print that will print everything on one line, but you can use println, if you need