Agent stuck on "Loading/Generating" indefinitely after update - macOS, all Gemini models affected

Google Antigravity
1

Environment:

  • Antigravity Version: 1.107.0 (VSCode OSS 1.107.0)
  • OS: macOS (Apple Silicon)
  • Models affected: Gemini 3.1 Pro Preview, Gemini 3 Flash (all Gemini models)

Issue Description:
After the latest update, the Agent panel is completely non-functional. Every message gets stuck on “Loading” or “Generating” indefinitely and never returns a response. Claude models are unaffected.

Root cause identified via DevTools Network tab:
Requests to https://127.0.0.1:[port]/proxy/unleash/frontend are returning 404 Not Found. This endpoint appears to be a feature flag service that is being routed to the local language server, which does not support this path. This looks like a routing regression introduced in the latest update.

Troubleshooting already attempted (none worked):

  • Full reinstall of Antigravity
  • Cleared all local globalStorage and cache
  • Re-authenticated Google account
  • Switched between all available models
  • Configured HTTP proxy settings
  • Machine restart

Impact: Total blocker — Agent is completely unusable on macOS with any Gemini model.

This appears to be the same server-side issue reported by other users in this thread. Please escalate.

2

Hello @czboyl, welcome to AI Forum!

Thank you for bringing the issue to our attention. Our engineering team is currently investigating the matter, and we appreciate your patience as we work toward a resolution.