// Fix autosize for products attachment tab textarea

admin-dev/themes/default/template/controllers/products/textarea_lang.tpl

@@ -28,8 +28,8 @@
 	<div class="col-lg-10">
 		<textarea
 			id="{$input_name}_{$language.id_lang}" 
-			name="{$input_name}_{$language.id_lasng}" 
-			class="autoload_rte" >
+			name="{$input_name}_{$language.id_lang}"
+			class="{if isset($autosize_js)}textarea-autosize{else}autoload_rte{/if}">
 			{if isset($input_value[$language.id_lang])}{$input_value[$language.id_lang]|htmlentitiesUTF8}{/if}
 		</textarea>
 	</div>
@@ -49,8 +49,15 @@
 <span class="counter" max="{if isset($max)}{$max}{else}none{/if}"></span>
 {/foreach}
 
+{if isset($autosize_js)}
+<script src="{$autosize_js}" type="text/javascript"></script>
+{/if}
 <script type="text/javascript">
 	var iso = '{$iso_tiny_mce}';
 	var pathCSS = '{$smarty.const._THEME_CSS_DIR_}';
 	var ad = '{$ad}';
+
+	{if isset($autosize_js)}
+	$(".textarea-autosize").autosize();
+	{/if}
 </script>

controllers/admin/AdminProductsController.php

@@ -3442,6 +3442,7 @@ class AdminProductsControllerCore extends AdminController
 					'table' => $this->table,
 					'ad' => dirname($_SERVER['PHP_SELF']),
 					'iso_tiny_mce' => $iso_tiny_mce,
+					'autosize_js' => _PS_JS_DIR_.'jquery/plugins/jquery.autosize.min.js',
 					'languages' => $this->_languages,
 					'id_lang' => $this->context->language->id,
 					'attach1' => Attachment::getAttachments($this->context->language->id, $obj->id, true),