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.