GET /runs returning duplicates on some orderby filters

[audiosalix]

When getting a list of all runs in a category, I found that I was receiving duplicates of many runs instead of the full list of runs that matched the filter

To test, I ran a script that took every verified run from a particular category, and put the run IDs into a set.
(https://www.speedrun.com/api/v1/runs?category=n2y9z41d&status=verified)

orderby=game and orderby=level returned 802 unique runs, and 606 duplicate runs
orderby=date returned 1398 unique runs and 10 duplicates
orderby=category and orderby=verify-date returned 1408 unique runs and no duplicates

No idea what is causing this behaviour and didn't seem to be any logic to which runs were duplicated, although it was deterministic. Another moderator also tested with their own script and got the same results.