From 736d2b8e2bb7f95083c400b064a9fa2d369b2a19 Mon Sep 17 00:00:00 2001
From: Ronald Brill <rbri@rbri.de>
Date: Fri, 22 Nov 2024 20:30:43 +0100
Subject: [PATCH] fix attrib index handling

---
 src/main/java/org/htmlunit/html/DomAttr.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/org/htmlunit/html/DomAttr.java b/src/main/java/org/htmlunit/html/DomAttr.java
index e9e8cc6092..b4a3d6c78f 100644
--- a/src/main/java/org/htmlunit/html/DomAttr.java
+++ b/src/main/java/org/htmlunit/html/DomAttr.java
@@ -174,6 +174,15 @@ public String getTextContent() {
      */
     @Override
     public void setTextContent(final String textContent) {
+        final boolean mappedElement =
+                getOwnerDocument() instanceof HtmlPage
+                && (DomElement.NAME_ATTRIBUTE.equals(getName()) || DomElement.ID_ATTRIBUTE.equals(getName()));
+        if (mappedElement) {
+            ((HtmlPage) getPage()).removeMappedElement(getOwnerElement(), false, false);
+        }
         setValue(textContent);
+        if (mappedElement) {
+            ((HtmlPage) getPage()).addMappedElement(getOwnerElement(), false);
+        }
     }
 }