Possible false positive in Lint/DuplicateMatchPattern

[hmcguire-shopify]

Given the following case statement:

case x
in "a" if false
in "a"
end

Expected behavior

Lint/DuplicateMatchPattern should not be reported because of the guard clause

Actual behavior

cop.rb:3:4: W: Lint/DuplicateMatchPattern: Duplicate in pattern detected.
in "a"
   ^^^

Steps to reproduce the problem

echo 'case x\nin "a" if false\nin "a"\nend' > fp.rb && bx rubocop fp.rb

RuboCop version

❯ bx rubocop -V
1.50.0 (using Parser 3.2.2.0, rubocop-ast 1.28.0, running on ruby 3.2.2) [arm64-darwin22]
  - rubocop-rails 2.19.0