Invalid autocorrection behavior for Style/CombinableLoops and Lint/UnusedBlockArgument cops

[ydakuka]

Actual behavior

I have the code:

class Test
  def my_method
    # bad - easier to move/add/remove parameters, but still not preferred
    [[1, 2, 3], [4, 5, 6]].each do |a, b, c,|
      a + b + c
    end

    # good
    [[1, 2, 3], [4, 5, 6]].each do |a, b, c|
      a + b + c
    end

    # bad
    [[1, 2, 3], [4, 5, 6]].each { |a, b, c,| a + b + c }
  end
end

If I run rubocop with -A option, I will get:

ydakuka@yauhenid:~/Work/project$ bin/rails_docker rubocop -A app/models/test_class.rb
Inspecting 1 file
An error occurred while Style/CombinableLoops cop was inspecting /app/app/models/test_class.rb:16:4.
To see the complete backtrace run rubocop -d.
W

Offenses:

app/models/test_class.rb:6:5: W: Lint/EmptyBlock: Empty block detected.
    [[1, 2, 3], [4, 5, 6]].each do |a, b, _c,| ...
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
app/models/test_class.rb:6:43: W: [Corrected] Lint/UnusedBlockArgument: Unused block argument - c. If it's necessary, use _ or _c as an argument name to indicate that it won't be used.
    [[1, 2, 3], [4, 5, 6]].each do |a, b, c,|
                                          ^
app/models/test_class.rb:7:7: W: [Corrected] Lint/Void: Variable a used in void context.
      a
      ^
app/models/test_class.rb:7:9: W: [Corrected] Lint/Void: Operator + used in void context.
      a + b
        ^
app/models/test_class.rb:7:13: W: [Corrected] Lint/Void: Operator + used in void context.
      a + b + c
            ^
app/models/test_class.rb:8:1: C: [Corrected] Layout/IndentationConsistency: Inconsistent indentation detected.
a + b + c
^^^^^^^^^
app/models/test_class.rb:8:1: W: [Corrected] Lint/Void: Variable b used in void context.
b
^
app/models/test_class.rb:8:1: W: [Corrected] Lint/Void: Variable c used in void context.
c
^
app/models/test_class.rb:8:7: W: [Corrected] Lint/Void: Operator + used in void context.
a + b + c
      ^
app/models/test_class.rb:8:7: W: [Corrected] Lint/Void: Variable b used in void context.
      b
      ^
app/models/test_class.rb:8:7: W: [Corrected] Lint/Void: Variable c used in void context.
      c
      ^
app/models/test_class.rb:9:7: W: [Corrected] Lint/Void: Variable a used in void context.
      a
      ^
app/models/test_class.rb:9:9: W: [Corrected] Lint/Void: Operator + used in void context.
      a + b
        ^
app/models/test_class.rb:10:1: C: [Corrected] Layout/IndentationConsistency: Inconsistent indentation detected.
c
^
app/models/test_class.rb:10:1: W: [Corrected] Lint/Void: Variable b used in void context.
b
^
app/models/test_class.rb:10:1: W: [Corrected] Lint/Void: Variable c used in void context.
c
^
app/models/test_class.rb:10:7: W: [Corrected] Lint/Void: Variable b used in void context.
      b
      ^
app/models/test_class.rb:10:7: W: [Corrected] Lint/Void: Variable c used in void context.
      c
      ^
app/models/test_class.rb:11:5: C: [Corrected] Style/CombinableLoops: Combine this loop with the previous loop.
    [[1, 2, 3], [4, 5, 6]].each do |a, b, c| ...
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
app/models/test_class.rb:14:5: C: [Corrected] Style/CombinableLoops: Combine this loop with the previous loop.
    [[1, 2, 3], [4, 5, 6]].each { |a, b, c,| a + b + c }
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
app/models/test_class.rb:16:5: C: [Corrected] Style/CombinableLoops: Combine this loop with the previous loop.
    [[1, 2, 3], [4, 5, 6]].each { |a, b, c,| a + b + c }
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

1 file inspected, 21 offenses detected, 20 offenses corrected

1 error occurred:
An error occurred while Style/CombinableLoops cop was inspecting /app/app/models/test_class.rb:16:4.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.57.2 (using Parser 3.2.2.4, rubocop-ast 1.29.0, running on ruby 2.7.8) [x86_64-linux]

Rubocop

ydakuka@yauhenid:~/Work/project$ bin/rails_docker rubocop -V
1.57.2 (using Parser 3.2.2.4, rubocop-ast 1.29.0, running on ruby 2.7.8) [x86_64-linux]
  - rubocop-capybara 2.19.0
  - rubocop-factory_bot 2.24.0
  - rubocop-performance 1.19.1
  - rubocop-rails 2.22.0
  - rubocop-rake 0.6.0
  - rubocop-rspec 2.25.0
  - rubocop-thread_safety 0.5.1