Endless builds because of "ignore committer strategy" no longer working as before

[Enrice]

Jenkins and plugins versions report

Environment

Jenkins 2.452.3
ignore-committer-strategy 1.0.4
cloudbees-bitbucket-branch-source 887 or 888 likewise, 886 worked ok

What Operating System are you using (both controller, and any agents involved in the problem)?

Rocky Linux 9

Reproduction steps

add at least 2 commits by the same exempted author and push them at the end of the build.
--- or ---
just trigger a multibranch pipeline scan.

Expected Results

There should be no difference regarding the number of commits; if the push only contains commits of the same exempted author, the build should not be triggered.

Actual Results

With builds that produce 2 commits by our CI user, those get endlessly re-triggered by branch events.
With builds that only produce 1 commit, the strategy works as expected.
When triggered by a scan, ALL branches get rebuilt

Anything else?

No response

Are you interested in contributing a fix?

No response