Hi,
The search engine is actually a bit more complex. It does:
1. If it can use the search index, it will use it and return results with the highest relevance first.
2. If it can't use the index, or determines that the index would be slower then a full scan (in the case of very popular words, or complex phrases), it will do a full table scan and return the results by post time.
Changing the sort order only works in case #2.
We will probably end up removing the arrows. You can always limit by date in either case.
Cheers,
Alex
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