Weird sorting of outings when filtering on title

Tested on the prod
When no filter outings are sorted newer date first (modulo the columns issue).
If applying a filter such as activity, it's still the case.

If I add a title filter, the sorting looks no longer consistent:

Start by reproducing the outings listing described in the issue with no filter, an activity filter, and a title filter. Inspect the API path that applies title filtering and ordering, then verify that filtered results remain sorted newest date first, as shown in the report.

Written by the indexing model from the issue text.