On the Translation overview, the link for each node is to its "Translate" tab. To access Translation overview, the user need the "manage $lang_code translation overview priorities" for any $lang_code, but to access "Translate" tab, the user need the "'translate content'" permission (and view access to the node). This means that it is possible for a user to have access to the Translation overview page while not being able to access to page linked from it.

translation_overview_manager_page should check if the user has the "translate content" permission to decide if it should link to the node translate or view tab.