Environment Information
Tested on Jruby 9.2.14.0

Expected Behavior

2.5.0 :001 > prng = Random.new(1000); (0..10).to_a.shuffle(prng)
Traceback (most recent call last):
3: from /Users/jalves/.rvm/rubies/ruby-2.5.0/bin/irb:11:in <main>' 2: from (irb):1 1: from (irb):1:in shuffle'

Actual Behavior

jruby-9.2.14.0 :004 > prng = Random.new(1000); (0..10).to_a.shuffle(prng)
=> [3, 10, 9, 6, 7, 2, 4, 5, 1, 0, 8]

So I would expect the shuffle method to throw an exception, which does not happen in the JRuby case.