It appears to work as intended in Firefox. You click a checkbox and the page is reloaded with the filtered results.
However, when you click the check box in Chrome, Safari or Edge, the box is just simply checked or unchecked. It doesn't modify the results/reload the page.
Example: http://magento1-demo.integernet-solr.com/default/catalogsearch/result/?q=shirt
It appears to work as intended in Firefox. You click a checkbox and the page is reloaded with the filtered results.
However, when you click the check box in Chrome, Safari or Edge, the box is just simply checked or unchecked. It doesn't modify the results/reload the page.