[BUG] Claude Code shows "offline" status despite it outputting a response

Environment

• Platform (select one):
• [Y] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.53
• Operating System: Ubuntu 20.04
• Terminal: bash

Bug Description

Claude Code shows "offline" status despite it outputting a response when connecting to Claude Code through HTTP proxy and SSH remote forwarding in a server that cannot connect to Claude Code natively.

Steps to Reproduce

1. Configure SSH with remote forwarding: RemoteForward 127.0.0.1:8081 api.anthropic.com:443, then connect to the Remote Server
2. Start HTTP proxy in a terminal that redirects HTTP requests to 127.0.0.1:8081, the proxy is at 127.0.0.1:8888
3. Set proxy environment: export https_proxy=http://127.0.0.1:8888, then claude
4. Observe "offline" status despite proxy setup

Expected Behavior

No "offline" status

Actual Behavior

"offline" status

Additional Context

An example when greeting claude with "hi":

When thinking, shows "offline" status.
<img width="446" height="74" alt="Image" src="https://github.com/user-attachments/assets/f39688df-35a9-4f43-a882-d768f9b42b05" />

Then, there is a correct response:

<img width="252" height="69" alt="Image" src="https://github.com/user-attachments/assets/c0893049-13b9-40d7-86a3-52f9ff97f464" />