Fixed future break ConcurrentModificationException.
@@ -38,7 +38,7 @@ public class FutureBreak {
if (FUTURE_BREAKS.isEmpty())
return;
- for (final FutureBreak futureBreak : FUTURE_BREAKS) {
+ for (final FutureBreak futureBreak : new LinkedList<>(FUTURE_BREAKS)) {
if (world != futureBreak.world)
continue;
