Reduce default textarea rows

library/Icinga/Web/Form/Element/Textarea.php

@@ -0,0 +1,20 @@
+<?php
+/* Icinga Web 2 | (c) 2019 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Web\Form\Element;
+
+use Icinga\Web\Form\FormElement;
+
+class Textarea extends FormElement
+{
+    public $helper = 'formTextarea';
+
+    public function __construct($spec, $options = null)
+    {
+        parent::__construct($spec, $options);
+
+        if ($this->getAttrib('rows') === null) {
+            $this->setAttrib('rows', 3);
+        }
+    }
+}