Kilotest: Diagnoses of hovering changes content violation by HTML element 205 on Mozilla Foundation page

Here is how tools diagnose the hovering changes content issue for HTML element 205 of the Mozilla Foundation page.

Basics

• About the hovering changes content issue
  • Why it matters: User cannot explore the document reliably with a mouse
  • Priority: lowest
  • Related WCAG standard: 3.2.5
• About the Mozilla Foundation page
  • URL: https://www.mozilla.org/en-US/
  • Tested on 2026-04-03 at 03:56
• About HTML element 205
  • Take me there
  • Tag name: A
  • Text: About us
  • Start tag: <a class="m24-c-menu-title" href="/en-US/about/" aria-haspopup="true" aria-controls="m24-c-menu-panel-about" data-testid="m24-navigation-link-about-us" aria-expanded="false">
  • XPath: /html/body/nav[1]/div[1]/div[1]/div[1]/div[1]/div[1]/ul[1]/li[2]/a[1]
  • Bounding box: x = 985, y = 16, width = 78, height = 23

Diagnoses

1. Hovering over the element changes the related visible element count by 50 in 158ms

   Tool: Testaro (CVS Health)

   Rule: hover