Multi-DB 2.7.1 does not delete some tables when you delete a blog

Hi,

I am still testing Multi-DB, version 2.7.1 suppose to fix this issue, but not for me!
to make sure, I create a fresh MU Install (also 2.7.1) - created few blogs and then tried to delete, visually blog is removed since its removed from the global tables but all blog specific tables are left in the database..
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I am using 16 db config