Expected behavior

For example, when running autocorrect with the following configuration:

Style/AccessorGrouping:
  EnforcedStyle: separated

# frozen_string_literal: true

class Foo
  attr_reader :a, # a
    :b # b
end

In this case, the expected change was as follows:

# frozen_string_literal: true

class Foo
  # a
  attr_reader :a
  # b
  attr_reader :b
end

Actual behavior

The trailing comment ends up duplicated as shown below:

# frozen_string_literal: true

class Foo
  # a
  attr_reader :a
  # b
  attr_reader :b # b
end

It seems that when the original code spans multiple lines without parentheses, the trailing comment gets duplicated.

Steps to reproduce the problem

The issue can be easily reproduced by running autocorrect with the code and configuration described above.

RuboCop version

$ bundle exec rubocop -V
1.78.0 (using Parser 3.3.8.0, rubocop-ast 1.45.1, analyzing as Ruby 2.7, running on ruby 3.4.2) [x86_64-linux]
  - rubocop-performance 1.25.0
  - rubocop-rake 0.7.1
  - rubocop-rspec 3.6.0