Cannot expand selection past case

[i512]

I'm using neovim and I've installed the latest versions of vim-textobj-rubyblock and vim-textobj-user with Plug.
For example I want to expand my selection to include method baz.

module Foo
  class Bar
    def baz(a)
      case a # << cursor
      when 1
        1
      when 2
        2
      end
    end
  end
end

When I press var it selects

      case a
      when 1
        1
      when 2
        2
      end

When I repeat ar nothing happens, selection doesn't change.

[i512]

If I start expanding from a near method to class it actually selects the method with case:

module Foo
  class Bar
    def bar
      123 # << cursor
    end

    def baz(a)
      case a
      when 1
        1
      end
    end
  end
end

I press var and it selects:

    def bar
      123
    end

Next I press ar and it selects the other method that includes case:

    def baz(a)
      case a
      when 1
        1
      end
    end