Struggling to capture the event which is triggered when form Tags change, add or remove?

Frappe Framework App Development
1

Here’s what I have so far, a jquery hack. Works when adding tags but failing to remove them:

function update_tags(frm){
    frappe.call({
		method: "gia_events.api.update_tags",
		args: {
		    lead: frm.doc.name
		},
		callback: function(r) {
			console.log(r.message);
			if (typeof r.message !== 'undefined' && r.message){
			    
			    if (r.message === frm.doc.import_tags){ return; }
			    
			    frm.set_value("import_tags", r.message);
                frm.save();
        	    frm.refresh_field('import_tags');
			}
	        
		}
	});
}


frappe.ui.form.on('Lead', {
  refresh(frm) {
      
        $('.tags-input').on('blur', function(){
            update_tags(frm);
        });
        
        $('.remove-btn')
        .on('blur', function(){
            console.log('clicked');
            update_tags(frm);
        }) // incomplete
        .css( "backgroundColor", "red" );
  }
})