diff --git a/src/Element/ComponentPropsForm.php b/src/Element/ComponentPropsForm.php
index 1e54e93673febd30974f7b409c3abcdd34fb3de0..fbc9b9db4db27dcd022da0707dd0015a91a6adb0 100644
--- a/src/Element/ComponentPropsForm.php
+++ b/src/Element/ComponentPropsForm.php
@@ -58,6 +58,9 @@ class ComponentPropsForm extends ComponentFormBase {
       '#process' => [
         [$class, 'buildForm'],
       ],
+      '#after_build' => [
+        [$class, 'afterBuild'],
+      ],
     ];
   }