The tags="current" refers to the tags attached to the article you place the {articles} tag in. Or if you place it somewhere else (like in a module), it refers to the article currently being viewed. So that only works in article views.
on a category blog page to show all articles in the category, but on a tag list page {articles} will always show all posts regardless of this menu item type, correct?
So is there no way to display posts on a tag list blog page via