diff --git a/src/Plugin/ProcessManager.php b/src/Plugin/ProcessManager.php
index cf890cf..66686cc 100644
--- a/src/Plugin/ProcessManager.php
+++ b/src/Plugin/ProcessManager.php
@@ -127,7 +127,7 @@ class ProcessManager extends PluginManager {
       if ($button = self::findButton($parent)) {
         // Since this button is technically being "moved", it needs to be
         // rendered now, so it doesn't get printed twice (in the original spot).
-        $element->appendProperty('field_suffix', $button->setIcon()->render());
+        $element->appendProperty('field_suffix', $button->setIcon()->renderPlain());
       }
     }