I have a website and I often see Safari clients making requests directly to the root of one of my subdomains. This behaviour is unique to Safari as other browsers and other devices aren't making these requests to the root of that subdomain. I serve no page on the root of that subdomain, but I do have pages on specific paths on that subdomain. The requests towards the root don't have any referer and don't seem to be coming from search engines or any other external source. Some clients have visited specific paths (where I serve content) before. I can't pinpoint what is triggering these requests from these devices. It also doesn't seem related to a specific version.
Requests for favicons and Apple touch icons are all handled correctly so they aren't the cause of this issue. These is no additional path or query parameters in these requests.
Could you please share if there is behaviour within Safari that could cause this request to the root of the subdomain? E.g. having a tab (with a specific path of my website) on standby and that Safari is making this request in the background?
Thank you.