Test that fails for the right reason

It looks like maybe the `single_pickup` method in app/helpers/requests/application_helper.rb, specifically the `.to_json` called on the value, is causing a problem with this item, but removing it breaks other items, I'm not sure why this one is behaving differently

app/helpers/requests/application_helper.rb

@@ -378,6 +378,7 @@ def single_pickup(is_charged, name, id, location)
                 else
                   ''
                 end
+        # if we remove the `.json` it fixes our feature test, but breaks our other tests
         hidden = hidden_field_tag name.to_s, "", value: { 'pick_up' => location[:gfa_pickup], 'pick_up_location_code' => location[:pick_up_location_code] }.to_json, class: 'single-pick-up-hidden', id: id
         label = label_tag id, "Pick-up location: #{location[:label]}", class: 'single-pick-up', style: style.to_s
         hidden + label

spec/features/requests/request_spec.rb

@@ -81,7 +81,16 @@
     describe 'a mystery html item' do
       xit 'does not display html as a string' do
         stub_catalog_raw(bib_id: '993569343506421')
+        stub_single_holding_location('plasma$nb')
+        stub_availability_by_holding_id(bib_id: '993569343506421', holding_id: '22693661550006421')
         visit('requests/993569343506421?aeon=false&mfhd=22693661550006421')
+        within('#request_user_supplied_22693661550006421') do
+          page.find("#requestable__delivery_mode_22693661550006421_print").click
+          expect(page).to have_selector('#fields-print__22693661550006421')
+          # This element should be rendered as html, not plain text
+          expect(page.body).not_to include('fields-print__22693661550006421_card')
+          expect(page).to have_selector('#fields-print__22693661550006421_card')
+        end
       end
     end