Reset filters after click

app/assets/javascripts/filtered_search/filtered_search_dropdown.js

@@ -38,6 +38,7 @@
           gl.FilteredSearchDropdownManager.addWordToInput(this.filter, value, true);
         }
 
+        this.resetFilters();
         this.dismissDropdown();
         this.dispatchInputEvent();
       }
@@ -107,7 +108,7 @@
       const hook = this.getCurrentHook();
 
       if (hook) {
-        const data = hook.list.data;
+        const data = hook.list.data || [];
         const results = data.map((o) => {
           const updated = o;
           updated.droplab_hidden = false;

spec/features/merge_requests/reset_filters_spec.rb

@@ -49,6 +49,26 @@ feature 'Merge requests filter clear button', feature: true, js: true do
     end
   end
 
+  context 'when multiple label filters have been applied' do
+    let!(:label) { create(:label, project: project, name: 'Frontend') }
+    let(:filter_dropdown) { find("#js-dropdown-label .filter-dropdown") }
+
+    before do
+      visit_merge_requests(project)
+      init_label_search
+    end
+
+    it 'filters bug label' do
+      filtered_search.set('~bug')
+
+      filter_dropdown.find('.filter-dropdown-item', text: bug.title).click
+      init_label_search
+
+      expect(filter_dropdown.find('.filter-dropdown-item', text: bug.title)).to be_visible
+      expect(filter_dropdown.find('.filter-dropdown-item', text: label.title)).to be_visible
+    end
+  end
+
   context 'when a text search has been conducted' do
     it 'resets the text search filter' do
       visit_merge_requests(project, search: 'Bug')