Mixing cherry-pick and merge

I just merged from a branch from which I previously cherry-picked some commits and now the log contains the already cherry-picked commits twice (which is rather confusing). Is this a bug or a feature?

Steps to reproduce:

mkdir foo && cd foo git init echo 123 >file git add file git commit -m "init" git checkout -b branch echo 321 >file git commit -a -m "commit from branch" => Created commit 531fa08: commit from branch git checkout master git cherry-pick 531fa08 git merge branch git-log --pretty=oneline e5e8011c1ab7c9b8509604d27327b29fd1f7003a Merge branch 'branch' ad91b39e433228809eb3cd6281cb686bf4871da0 commit from branch 531fa081d93249288efb70e9e8204e4ed9d70099 commit from branch bc0a5bca29620eccd5b75e473d102317d8ce29f7 init