Unclickable Leave Page/Stay on Page popup when navigating away from one page to another with a popup.
In MacOS26 26.1 (25B78), Safari Version 26.1 (and presumably earlier), we get an unclickable popup from the "Stay on Page" "Leave Page" dialog if you have text fields filled in one site and decide to navigate away to another page that begins with a popup (like a GPS location request).
In some instances, like mine, I had in-progress critical financial pages open for my business, and couldn't just nuke the entire process. After some investigation, it looks like you're able to work around by force closing WebKits. In this case, it's the bottom one.
Apple: when navigating away from a page producing BeforeUnload Confirmation Sheet, navigating into a page producing Geolocation Permission Prompt, it causes the entire Safari process to become unclickable. You can't allow a takeover if you're not going to properly bug test these workflows.
I hope this helps someone.