For the first time this morning, I used Safari on my new iPhone 17 running iOS 26. I noticed that about every 5 or 6 seconds, Voiceover makes the "screen changed" sound. Nothing actually happens, it doesn't seem to refresh or lose focus from what I can tell. I did a quick scroll through the Safari settings and didn't find anything that could explain why it's making that sound. It's definitely not happening on my 16 Pro Max running the latest version of iOS 18.