module E; end

module Foo
  FOO = 42
  prepend E # remove me, or change prepend => include
end

class X
  include Foo

  def m
    p FOO
  end
end

X.new.m # => should print 42. Instead:
# NameError: uninitialized constant X::FOO
# Did you mean?  Foo
#   const_missing at org/jruby/RubyModule.java:3747
#               m at bug.rb:12
#          <main> at bug.rb:16