TanStack Start virtual module fails to load via reverse proxy (vite dev server, since v1.167.17)

[fcannizzaro]

Which project does this relate to?

Start

Describe the bug

Since the v1.167.17 version there is bug on TanStack Start virtual module loading when using the vite dev server behind a reverse proxy:

GET https://app.localhost/@id/__x00__%23tanstack-start-plugin-adapters net::ERR_ABORTED 400 (Bad Request)Understand this error

(index):1 Uncaught (in promise) TypeError: Failed to fetch dynamically imported module: https://app.localhost/@id/virtual:tanstack-start-client-entry

(same as #7155)

Your Example Website or App

https://github.com/fcannizzaro/tanstack-start-virtual-module-error

Steps to Reproduce the Bug or Issue

1. Open https://app.localhost
2. Check console for:

GET https://app.localhost/@id/__x00__%23tanstack-start-plugin-adapters net::ERR_ABORTED 400 (Bad Request)Understand this error

(index):1 Uncaught (in promise) TypeError: Failed to fetch dynamically imported module: https://app.localhost/@id/virtual:tanstack-start-client-entry

Expected behavior

No errors on virtual module loading, like the relative non-proxied version (http://localhost:3000)

Screenshots or Videos

No response

Platform

• Start Version: 1.167.4
• OS: macOS
• Browser: any
• Browser Version: -
• Bundler: vite
• Bundler Version: 8.0.7

Additional context

No response