Sorting issues does not work via the API (on Gitlab.com)

Summary

We are using the order_by & sort attributes to the projects/#/issues endpoint in order to sort issues by their updated_at so we can synchronize issues in a "delta" fashion. This used to work, and we would be able to easily retrieve just the issues that changed since the last time we synchronized tasks.

Steps to reproduce

https://gitlab.com/api/v3/projects/#/issues?order_by=updated_at&sort=desc

Expected behavior

The returned issues to be sorted by the updated_at stamp in a descending order.

Actual behavior

The returned issues always sorted by the created_at stamp in a descending order.

Other info

This may apply to CE and self-hosted installs.. which means we simply have to completely disable our delta sync and revert back to full syncs for all our gitlab customers.

(aside.. it would be VERY helpful to be able to determine the version of gitlab via an authenticated endpoint so I know IF it's a working version of gitlab or a broken version)