[CRITICAL] Regression in v1.20.4: Agent Termination Loop and Package Instability (Linux x64)

Google Antigravity
1

Environment:

  • OS: Linux (Ubuntu/Debian-based)

  • Architecture: x86_64 / amd64

  • Affected Version: 1.20.4-1772839303

  • Stable Baseline (Verified): 1.19.6-1772152296

1. Issue Summary: Persistent Agent Failure Upon upgrading to version 1.20.4, the application enters a non-recoverable state where the internal worker triggers an “Agent terminated due to error” loop. This behavior persists across session restarts, credential rotations, and clean cache attempts.

2. Regression Evidence

  • Version 1.20.4: Fails immediately during the handshake/initialization phase of the Agent.

  • Version 1.19.6: Reverting to this version (via apt install antigravity=1.19.6-...) resolves all execution issues, confirming a software regression in the latest release cycle.

3. Package & Installation Anomalies

  • Apt Purge Deadlock: Attempting to remove the 1.20.4 package via apt-get purge results in a terminal hang during the postrm script execution. This indicates a potential deadlock or an unhandled I/O wait state in the package’s cleanup routine.

  • Tarball Exec Format Error: The standalone .tar.gz distribution for Linux fails to execute on x86_64 systems, returning bash: ./antigravity: cannot execute binary file: Exec format error. This strongly suggests a mismatch in the build pipeline (e.g., ARM64 binaries being packaged for x64 targets).

4. Steps to Reproduce

  1. Install antigravity version 1.20.4-1772839303 on a Linux x64 environment.

  2. Launch the application and attempt to initialize the Agent.

  3. Observe the immediate “Agent terminated” crash notification.

  4. Attempt a clean purge; observe the dpkg hang.

3 Likes
2

Same on Windows, had to revert to 1.19.6 as well

2 Likes
3

Same happens till the version 1.22.2(faced the same issue in 1.20.x-1.21.x versions), I did not find any plausible solutions; only reverting to 1.19.6 resolves the critical problem where the messages dont go through the agent at all. any other resolution which lets me stay on the updated version.
Thanks