I just noticed this issue too. I received a mail with the subject [Maniphest] [Retitled] T166512: Data filtering mockup and the body started with Kiailandi created this task. I got a bit confused. When I noticed several emails with the same issue, I knew the subject had to be wrong.

This bug has been fixed upstream. See https://secure.phabricator.com/w/changelog/2017.21/

@Mbch331 updated the task description.

(I intentionally set backticks around the task numbers in the task description to not create notifications in those mentioned tasks. Not sure why they got removed.)

In T166306#3298691, @Paladox wrote:

This bug has been fixed upstream. See https://secure.phabricator.com/w/changelog/2017.21/

Thanks for finding that!

Your welcome :). @Aklapper could you create the next milestone for the next phab update please? It's so i can add this task to that milestone.

This should be resolved