Rubocop: Style/MutableConstant autocorrect incorrectly wraps %w arrays with another array

[shepmaster]

Expected behavior

# frozen_string_literal: true
FOO = %w(one two three).freeze

Actual behavior

# frozen_string_literal: true
FOO = [%w(one two three)].freeze

Note the extra array.

Steps to reproduce the problem

Save this as foo.rb:

# frozen_string_literal: true
FOO = %w(one two three)

rubocop -c /dev/null -a foo.rb

RuboCop version

$ rubocop -V
0.47.1 (using Parser 2.3.3.1, running on ruby 2.3.3 x86_64-darwin16)

[mikegee]

I confirmed this and I'm looking into it.

[shepmaster]

Thank you @mikegee !