Bug in workflow job filters?

Build Environment
,
1

I think I may have found a bug with workflow job filters which I could use some input on.

Consider the following config and pushing to the branch “branch-something”, the job “next-job-a-2” incorrectly runs. I would expect that job “check-branch-a” runs because the branch only filter passes, while the job “check-branch-a-2” should not run (and it appears not to because its not rendered in the workflow graph) yet job “next-job-a-2” executes, even though one of its requires has not run. Job “next-job-a” correctly runs.

Any input would be helpful. Thanks!

version: 2.1

jobs:
  checking-branch-job:
    docker:
      - image: circleci/node:10.8
    steps:
      - run: echo "hello world"
  next-job:
    docker:
      - image: circleci/node:10.8
    steps:
      - run: echo "1"

workflows:
  build:
    jobs:
      - checking-branch-job:
          name: check-branch-a
          filters:
            branches:
              only:
                - /^branch-.*$/
      - checking-branch-job:
          name: check-branch-a-2
          filters:
            branches:
              only:
                - /^branch-.*-2$/
      - next-job:
          name: next-job-a
          requires:
            - check-branch-a
      - next-job:
          name: next-job-a-2
          requires:
            - check-branch-a
            - check-branch-a-2