On Commons when attempting to use create_timestamp_asc described at https://www.mediawiki.org/wiki/Help:CirrusSearch, the sort option appears to default to desc while displaying an error in the advanced search tabs of "advancedsearch-sort-unknown"
Examples
- https://commons.wikimedia.org/w/index.php?search=incategory%3APhotographs_by_Anonymous_Hong_Kong_Photographer_1&title=Special%3ASearch&profile=advanced&fulltext=1&advancedSearch-current=%7B%7D&ns6=1&sort=create_timestamp_asc
- https://commons.wikimedia.org/w/index.php?search=incategory%3APhotographs_by_Anonymous_Hong_Kong_Photographer_1&title=Special%3ASearch&profile=advanced&fulltext=1&advancedSearch-current=%7B%7D&ns6=1&sort=create_timestamp_desc