'Publisher' cannot review pending change of existing article

Hi,
My workflow for creating a new article works
1. Author creates article, 2. Publisher reviews and approves

But when the 'Author' edits the same article (normal edit redirected to EA) after it has been published and sends it for review, the 'Publisher' sees it in pending, can also approve or reject, but cannot edit the pending article.

Is this the expected behavior?

Thanks!

Frank