Case On the /search page - Changed the date_range from 'anytime' to 'last day'. I have checked my browsers settings and javascript is enabled for all sites.
Expectation: On Change Event: in the time_range: expectation is that the query would get automatically re-submitted with that time range. - that is not happening.
Problem: I located the code (see below) that is "supposed" to auto-re-submit the query, but it is not working. If the query is manually re-submitted it works OK at that point.

QUESTION: Why is this not working?
/usr/local/searxng/searxng-src/searx/static/themes/simple/src/js/main/search.js
excerpt:
// Additionally to searching when selecting a new category, we also
// automatically start a new search request when the user changes a search
// filter (safesearch, time range or language) (this requires JavaScript
// though)
if ( qinput !== null
&& searxng.settings.search_on_category_select
// If .search_filters is undefined (invisible) we are on the homepage and
// hence don't have to set any listeners
&& d.querySelector(".search_filters") != null
)
{
searxng.on(d.getElementById('time_range'), 'change', submitIfQuery);
searxng.on(d.getElementById('safesearch'), 'change', submitIfQuery);
searxng.on(d.getElementById('language'), 'change', submitIfQuery);
}