Fix dropdown filter input value after blur

Gemfile.lock

@@ -892,7 +892,7 @@ DEPENDENCIES
   gemojione (~> 3.0)
   github-linguist (~> 4.7.0)
   gitlab-flowdock-git-hook (~> 1.0.1)
-  gitlab-markup (~> 1.5.0)
+  gitlab-markup (~> 1.5.1)
   gitlab-turbolinks-classic (~> 2.5, >= 2.5.6)
   gitlab_omniauth-ldap (~> 1.2.1)
   gollum-lib (~> 4.2)

app/assets/javascripts/gl_dropdown.js

@@ -476,7 +476,7 @@
       this.removeArrayKeyEvent();
       $input = this.dropdown.find(".dropdown-input-field");
       if (this.options.filterable) {
-        $input.blur().val("");
+        $input.blur();
       }
       if (this.dropdown.find(".dropdown-toggle-page").length) {
         $('.dropdown-menu', this.dropdown).removeClass(PAGE_TWO_CLASS);

changelogs/unreleased/26616-fix-search-group-project-filters.yml

+---
+title: Fix search group/project filtering to show results
+merge_request:
+author:

spec/javascripts/gl_dropdown_spec.js.es6

@@ -50,6 +50,9 @@
         selectable: true,
         filterable: isFilterable,
         data: hasRemote ? remoteMock.bind({}, this.projectsData) : this.projectsData,
+        search: {
+          fields: ['name']
+        },
         text: (project) => {
           (project.name_with_namespace || project.name);
         },
@@ -167,5 +170,21 @@
         expect($(document.activeElement)).toEqual($(SEARCH_INPUT_SELECTOR));
       });
     });
+
+
+    it('should still have input value on close and restore', () => {
+      let $searchInput = $(SEARCH_INPUT_SELECTOR);
+      initDropDown.call(this, false, true);
+      $searchInput
+        .trigger('focus')
+        .val('g')
+        .trigger('input');
+      expect($searchInput.val()).toEqual('g');
+      this.dropdownButtonElement.trigger('hidden.bs.dropdown');
+      $searchInput
+        .trigger('blur')
+        .trigger('focus');
+      expect($searchInput.val()).toEqual('g');
+    });
   });
 })();