From 15d6735bd1cd29b7ec581d09e4b1421229138d0f Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Wed, 12 Oct 2016 10:15:39 +0200
Subject: [PATCH] Fixed table head being removed

---
 .../system/html/input/node/HtmlInputNodeTable.class.php    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTable.class.php b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTable.class.php
index d63617aa90..1587505c16 100644
--- a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTable.class.php
+++ b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTable.class.php
@@ -41,7 +41,12 @@ class HtmlInputNodeTable extends AbstractHtmlInputNode {
 			
 			// check if each `<tr>` has at least one `<td>`
 			foreach ($trs as $tr) {
-				if ($tr->getElementsByTagName('td')->length === 0) {
+				$childTagName = 'td';
+				if ($tr->parentNode->nodeName === 'thead') {
+					$childTagName = 'th';
+				}
+				
+				if ($tr->getElementsByTagName($childTagName)->length === 0) {
 					DOMUtil::removeNode($tr);
 				}
 			}
-- 
2.20.1