Community Forum Articles: How to switch from alphabetical sorting to value based sorting?

Trying to sort the community articles by the column "Activity", the system seems to sort the entries alphabetically, not value based.
e.g. in
"10m" follows "Aug '18".
Is there a way to change this behaviour so that the DateTime values are being used as sort key?
And is there a way to combine sortkeys within the UI?

Afternoon nielsson4711. The first community article, 'Welcome to the Neo4j Online Community', has been pinned to the top. That means it will always show first. This is to help newcomers see the expectations of interacting on the page.

The results that follow this first post should all be based on the timestamp, most recent first.