Fix explore filter. Fixes #13182

app/assets/javascripts/dashboard.js.coffee

 @Dashboard =
   init: ->
+    $("#project-filter-form-field").unbind()
     this.initSearch()
 
   initSearch: ->

app/assets/javascripts/projects_list.js.coffee

 class @ProjectsList
   constructor: ->
+    $("#project-filter-form-field").unbind()
     $(".projects-list .js-expand").on 'click', (e) ->
       e.preventDefault()
       list = $(this).closest('.projects-list')
-      list.find("li").show()
-      list.find("li.bottom").hide()
 
-    $(".projects-list-filter").keyup ->
-      terms = $(this).val()
-      uiBox = $('div.projects-list-holder')
-      filterSelector = $(this).data('filter-selector') || 'span.filter-title'
+    $("#filter_projects").keyup ->
+      ProjectsList.filter_results("#filter_projects")
+    $("#project-filter-form-field").keyup ->
+      ProjectsList.filter_results("#project-filter-form-field")
 
-      if terms == "" || terms == undefined
-        uiBox.find("ul.projects-list li").show()
-      else
-        uiBox.find("ul.projects-list li").each (index) ->
-          name = $(this).find(filterSelector).text()
+  @filter_results: (element) ->
+    terms = $(element).val()
+    filterSelector = $(element).data('filter-selector') || 'span.filter-title'
 
-          if name.toLowerCase().search(terms.toLowerCase()) == -1
-            $(this).hide()
-          else
-            $(this).show()
-      uiBox.find("ul.projects-list li.bottom").hide()
+    if terms == "" || terms == undefined
+      $("ul.projects-list li").show()
+      $('.gl-pagination').show()
+    else
+      $("ul.projects-list li").each (index) ->
+        name = $(this).find(filterSelector).text()
+
+        if name.toLowerCase().search(terms.toLowerCase()) == -1
+          $(this).hide()
+        else
+          $(this).show()
+      $('.gl-pagination').hide()

app/views/explore/projects/_filter.html.haml

-.pull-left
-  = form_tag explore_projects_filter_path, method: :get, class: 'form-inline form-tiny' do |f|
-    .form-group
-      = search_field_tag :search, params[:search], placeholder: "Filter by name", class: "form-control search-text-input", id: "projects_search", spellcheck: false
-      = hidden_field_tag :sort, @sort
-    .form-group
-      = button_tag 'Search', class: "btn"
-
 .pull-right.hidden-sm.hidden-xs
   - if current_user
     .dropdown.inline.append-right-10