Fix

app/views/admin/communication/blocks/_static.html.erb

@@ -4,7 +4,7 @@ should_render_data = block.data && block.data.present?
 %>
   - kind: block
     template: <%= block.template_kind %>
-    title: >
+    title: >-
       <%= prepare_text_for_static block.title %>
     position: <%= block.position %>
     data:

app/views/admin/communication/blocks/headings/_static.html.erb

   - kind: heading
     title: >-
-      <%= prepare_text_for_static heading.title, 3 %>
+      <%= prepare_text_for_static heading.title %>
     position: <%= heading.position %>
     level: <%= heading.level %>
 <% heading.blocks.published.ordered.each do |block| %>