fgrep -r 'new Random(System.currentTimeMillis())' . Gives 7 places where Random initialized with seed = currentTimeMillis. This is unnecessary, because better seed initialization happens in the default Random constructor.
Thanks for the report. This has been fixed in trunk and have been proposed for 6.0.x
This has been applied to 6.0.x and will be included in 6.0.20 onwards.