Unexpected method indentation when using access modifier

[ellingtonjp]

Expected behavior

I expect the following

class Foo
  public

    def bar
      puts 42
    end

    def baz
      puts 42
    end

    def nop
      puts 42
    end
end

to be corrected to

class Foo
  public

  def bar
    puts 42
  end

  def baz
    puts 42
  end

  def nop
    puts 42
  end
end

Actual behavior

Nothing is corrected in that case.

Additionally, rubocop will adjust indentation based on the first method. For example,

class Foo
  public

        def bar
          puts 42
        end

  def baz
    puts 42
  end

  def nop
    puts 42
  end
end

is corrected to

class Foo
  public

        def bar
          puts 42
        end

        def baz
          puts 42
        end

        def nop
          puts 42
        end
end

When using no access modifier, methods are always indented to two spaces, as expected.

Steps to reproduce the problem

Run rubocop on the previous examples with default configuration and no arguments.

RuboCop version

$ rubocop -V
0.52.1 (using Parser 2.4.0.2, running on ruby 2.2.4 x86_64-linux-gnu)

$ ruby --version
ruby 2.2.4p230 (2015-12-16) [x86_64-linux-gnu]