Incorrect autocorrect for Rails/ContentTag cop

[tsugimoto]

  def foo(options = {})
    content_tag :div, { class: "strong" }.merge(options) do
      "body"
    end
  end

is auto-corrected to invalid Ruby code by

$ rubocop --auto-correct --only Rails/ContentTag

Expected behavior

  def foo(options = {})
    tag.div({ class: "strong" }.merge(options)) do
      "body"
    end
  end

We must add the parens if content_tag is called with block and the option argument starts with hash literal.

Actual behavior

  def foo(options = {})
    tag.div { class: "strong" }.merge(options) do
      "body"
    end
  end

RuboCop version

$ bundle exec rubocop -V
0.85.1 (using Parser 2.7.1.3, rubocop-ast 0.0.3, running on ruby 2.6.3 x86_64-darwin18)
$ bundle exec gem list rubocop-rails

*** LOCAL GEMS ***

rubocop-rails (2.6.0)