correctif(champs/repetitions#remove): les row id etant des ulid commence par un int. utiliser l'ulid comme selecteur css n'est pas valide. il faut donc avoir un selecteur CSS 'safe', et envoyer le row_id

app/components/editable_champ/repetition_row_component/repetition_row_component.html.haml

@@ -1,9 +1,9 @@
-- row_id = "row-#{@row.first.row_id}"
+- row_id = "safe-row-selector-#{@row.first.row_id}"
 .row{ id: row_id }
   - @row.each do |champ|
     = fields_for champ.input_name, champ do |form|
       = render EditableChamp::EditableChampComponent.new form: form, champ: champ, seen_at: @seen_at
 
   .flex.row-reverse{ 'data-turbo': 'true' }
-    = link_to champs_repetition_path(@champ.id, row_id:), data: { turbo_method: :delete }, class: 'fr-btn fr-btn--sm fr-btn--tertiary fr-text-action-high--red-marianne' do
+    = link_to champs_repetition_path(@champ.id, row_id: @row.first.row_id), data: { turbo_method: :delete }, class: 'fr-btn fr-btn--sm fr-btn--tertiary fr-text-action-high--red-marianne' do
       Supprimer l’élément

app/views/champs/repetition/remove.turbo_stream.haml

@@ -1 +1 @@
-= turbo_stream.remove @row_id
+= turbo_stream.remove "safe-row-selector-#{@row_id}"

spec/system/users/brouillon_spec.rb

@@ -123,11 +123,12 @@ describe 'The user' do
 
     expect(page).to have_content('Supprimer', count: 2)
 
-    within '.repetition .row:first-child' do
-      click_on 'Supprimer l’élément'
-    end
-
-    expect(page).to have_content('Supprimer', count: 1)
+    expect do
+      within '.repetition .row:first-child' do
+        click_on 'Supprimer l’élément'
+      end
+      expect(page).to have_content('Supprimer', count: 1)
+    end.to change { Champ.count }
   end
 
   let(:simple_procedure) { create(:procedure, :published, :for_individual, types_de_champ_public: [{ mandatory: true, libelle: 'texte obligatoire' }, { mandatory: false, libelle: 'texte optionnel' }]) }