Google/OpenAI sites fail in v2rayN and Shadowrocket, but work fine in the Hiddify app — same server, same link

[tamaraoceandris]

Hi, I've been trying to fix this for a while and could use some help.

I'm running Hiddify Manager on Ubuntu 22.04, with VLESS + Reality + TCP (Vision flow).

The issue:
When I connect using the official Hiddify app, everything works perfectly — Google, Gemini, ChatGPT, captchas, all fine.

When I use the exact same subscription link in v2rayN (Windows and Android) or Shadowrocket (iPhone), most sites work, but Google-related sites (Gemini, fonts, captchas) and the ChatGPT app fail to load properly. In Chrome DevTools, the failing requests show "net::ERR_CONNECTION_CLOSED" specifically on domains like www.gstatic.com.

I really need to use v2rayN/Shadowrocket for personal reasons, so switching to the Hiddify app isn't an option for me.

What I've already tried (none of it fixed it):

• Checked DNS is resolving correctly through the tunnel
• Disabled IPv6 on both client and server
• Disabled QUIC in Chrome
• Confirmed Mux is off
• Checked HAProxy timeouts (they look fine, 50s)
• Tried both Xray and Singbox as the server core
• Tried Global routing mode in v2rayN (bypasses all rules)

I've attached a screenshot of the DevTools errors, plus the working (Hiddify) and non-working (v2rayN) config JSONs for comparison.

Any ideas what could cause this specific difference between clients? Happy to share more info if needed. Thanks!