Merge branch 'label-filter-fix' into 'master'

Fixed issue where label filtering didnt work

## What does this MR do?

The filterable option was missing which meant labels in the dropdown couldn't be filtered. This fixes that.

## What are the relevant issue numbers?

Closes #18375 

See merge request !4556

1 files changed, 15 insertions, 0 deletions

diff --git a/spec/features/issues/filter_by_labels_spec.rb b/spec/features/issues/filter_by_labels_spec.rb
index 0ec8b6b180a..16c619c9288 100644
--- a/spec/features/issues/filter_by_labels_spec.rb
+++ b/spec/features/issues/filter_by_labels_spec.rb
@@ -199,4 +199,19 @@ feature 'Issue filtering by Labels', feature: true do
       end
     end
   end
+
+  context 'dropdown filtering', js: true do
+    it 'should filter by label name' do
+      page.within '.labels-filter' do
+        click_button 'Label'
+        wait_for_ajax
+        fill_in 'label-name', with: 'bug'
+
+        page.within '.dropdown-content' do
+          expect(page).not_to have_content 'enhancement'
+          expect(page).to have_content 'bug'
+        end
+      end
+    end
+  end
 end