--- services/web/app/src/Features/Project/ProjectController.js
--- services/web/app/src/Features/Project/ProjectController.js
@@ -1134,11 +1134,7 @@ const ProjectController = {
               detachRole = req.params.detachRole
             }
 
-            const showNewSourceEditorOption =
-              (newSourceEditorAssignment &&
-                newSourceEditorAssignment.variant === 'codemirror') ||
-              user.betaProgram ||
-              shouldDisplayFeature('new_source_editor', false) // also allow override via ?new_source_editor=true
+            const showNewSourceEditorOption = false // disabled in CE/SP (Hotfix 3.2.1)
 
             const showSymbolPalette =
               !Features.hasFeature('saas') ||