::Test.new creates Object instead of Test class instance #6636

When creating an instance using ::Test.new, mruby incorrectly creates an Object instance instead of a Test class instance.

Expected Behavior

::Test.new should create an instance of the Test class.

Actual Behavior

::Test.new creates an Object instance instead.

Reproduction Steps

class Test
end

::Test.new.class #=> Object
Test.new.class #=> Test

Notes

This issue reproduces from commit 528e793 to HEAD (0109198).