Passing an array of parameters to block.call fails for blocks generated from methods

I first discovered this when I noticed that the following snippet fails in JRuby (both 1.1.6 and 1.1.7) and succeeds in Ruby 1.8.6:

module Mod
  [:Foo, :Bar].each_with_index &(method :const_set)
end

I came up with a little bit more detailed example that I think may be the same problem:

def foo(x, y)
  puts "#{x} and #{y}"
end

def bar(&block)
  block.call ["tweedledee", "tweedledum"]
end

bar &(method :foo)

The results from running the second snippet:

$ ruby test.rb 
tweedledee and tweedledum
$ jruby test.rb 
test.rb:12:in `to_proc': wrong # of arguments(1 for 2) (ArgumentError)
	from test.rb:12:in `call'
	from test.rb:12:in `bar'
	from test.rb:15

The same error occurs when running the first snippet.

Taking away the array brackets avoids the problem, as does using "yield" instead of a block variable.