diff -u b/core/themes/claro/claro.libraries.yml b/core/themes/claro/claro.libraries.yml
--- b/core/themes/claro/claro.libraries.yml
+++ b/core/themes/claro/claro.libraries.yml
@@ -59,7 +59,6 @@
       css/components/views-ui.css: {}
     theme:
       css/theme/colors.css: {}
-      css/theme/ckeditor-editor.css: {}
     layout:
       css/layout/breadcrumb.css: {}
       css/layout/local-actions.css: {}
@@ -150,6 +149,7 @@
   css:
     theme:
       css/theme/ckeditor-dialog.css: {}
+      css/theme/ckeditor-editor.css: {}
 
 ckeditor-editor:
   version: VERSION