Hello, I am facing a strange issue on iOS 18. After upgrading to iOS 18, I noticed the following problem: When connected to mobile data (with Wi-Fi turned off) and trying to upload a file larger than 1MB, the connection times out. However, if I repeat the same action using Wi-Fi, everything works fine. I have tested this issue in various ways, but nothing seems to resolve it. It appears that iOS 18 might have introduced a bug. You can replicate the issue using this site: https://video.online-convert.com/convert-to-mp4 (Note: this is not my page, but I found the same issue here). From the server access logs, I see successful pre-flight requests, but the main POST request never follows, which suggests that the client is not sending the request.