Kilotest: Diagnoses of attribute value invalid violation by HTML element 927 on Deque page

Basics

About the Deque page

• URL: https://www.deque.com/
• Tested 23 days ago by job 7tz on 2026-05-09 at 16:37

About HTML element 927

• Tag name: IFRAME
• Text: Skip to content … © Copyright 2026, Deque Systems, Inc. All Rights Reserved
• Start tag: <iframe id="bugherd_embed_communication_frame" name="embedCommunication" sandbox="allow-scripts allow-popups allow-same-origin allow-popups-to-escape-sandbox allow-storage-access-by-user-activation" src="https://sidebar.bugherd.com/sidebar/embed_html?apikey=lrspwsxgxzmw7deihhlavq" style="display: none; border-width: medium; border-style: none; border-color: currentcolor; border-image: initial; position: fixed; z-index: 2147483647; right: 0px; height: 144px; width: 330px; top: calc(100% - 154px);">
• XPath: /html/body/iframe[1]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the attribute value invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 927 of the Deque page.

1. Bad value allow-scripts allow-popups allow-same-origin allow-popups-to-escape-sandbox allow-storage-access-by-user-activation for attribute sandbox on element iframe: The string allow-storage-access-by-user-activation is not a valid keyword.

   Tool: Html Checker API (World Wide Web Consortium)