The host included in the Location header of the response is replaced with an unknown value.

Hello, community.

I am developing a hono application using the idx.dev IDE.
Currently, in the preview environment, I have implemented a process that includes the value of redirect_url as a query parameter in the Location header of the response.
Specifically, it looks like Location: https://example.com/xxx?redirect_url=http://127.0.0.1:9002/xxx.
However, while the application processes it as 127.0.0.1:9002, it is actually output to the response header as 9002-xxx.xxx.cloudworkstations.dev.
This is different from the actual domain of the preview environment (9000-xxx.xxx.cloudworkstations.dev), and I find it puzzling why this happens.

Is anyone else experiencing this issue?