From 3f312f7915fb3d025871ab5f4af56c0a9257f77d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fernando=20Jim=C3=A9nez=20Moreno?= <ferjmoreno@gmail.com>
Date: Tue, 26 Mar 2019 10:48:41 +0100
Subject: [PATCH] Set dirty descendants flag only for elements

---
 components/script/dom/node.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/components/script/dom/node.rs b/components/script/dom/node.rs
index d3ef77696ce..889c22f68ca 100644
--- a/components/script/dom/node.rs
+++ b/components/script/dom/node.rs
@@ -579,7 +579,9 @@ impl Node {
                 return;
             }
 
-            ancestor.set_flag(NodeFlags::HAS_DIRTY_DESCENDANTS, true);
+            if ancestor.is::<Element>() {
+                ancestor.set_flag(NodeFlags::HAS_DIRTY_DESCENDANTS, true);
+            }
         }
     }