Profile: stephaneB-5

Problem:
The user would like to put a loader (like for filters) in the result view when it is generated in ajax

Solution:
You can create your own loader and use the view's Javascript events to hide/show it:

jQuery( document ).on( 'js_event_wpv_parametric_search_started', function( event, data ) {
     jQuery('#my-loader').show();
});
 
jQuery( document ).on( 'js_event_wpv_parametric_search_results_updated', function( event, data ) {
     jQuery('#my-loader').hide();
});
// For pagination too
jQuery( document ).on( 'js_event_wpv_pagination_completed', function( event, data ) {
   jQuery('#my-loader').hide(); 
});

Relevant Documentation:
https://toolset.com/documentation/programmer-reference/adding-custom-javascript-code-to-views-that-use-ajax/

Problem:
Checkboxes field filter is not working as expected.

Solution:
It seems that at some point the setting to save 0 for non selected option was activated. Check this screenshot http://prntscr.com/11c2nac

Toolset stores the values of a checkboxes field inside a serialized array and perform the search using the "LIKE" operator. When an option is saved with 0, it matches the LIKE operator. This gives unexpected results.

The setting is configured to save nothing when an option is not selected. You will have to manually update the erroneous posts on a search to save the correct values on the database.