Version 5.0.13

system/Helpers/Form/Form.php

@@ -511,7 +511,8 @@ class Form
 	protected function _insert( mixed $element, string $elementKey=NULL, string $tab=NULL, string $after=NULL ) : void
 	{
 		$tab = $tab ?: $this->currentTab;
-		
+		$added = false;
+
 		if ( $after )
 		{
 			$elements = array();
@@ -521,15 +522,20 @@ class Form
 				if ( $key === $after )
 				{
 					$elements[ $elementKey ] = $element;
+					$added = true;
 				}
 			}
+
 			$this->elements[ $tab ] = $elements;
 		}
 		elseif( $elementKey )
 		{
 			$this->elements[ $tab ][ $elementKey ] = $element;
+			$added = true;
 		}
-		else
+
+		/* If we haven't added the field yet, tack it on to the end */
+		if( !$added )
 		{
 			$this->elements[ $tab ][] = $element;
 		}