I’m running into a critical migration issue with the Antigravity IDE. After upgrading from v1.16.5 to the latest 1.18.x /1.19.x versions, almost all of my chat histories have become inaccessible.
The “Past conversation” clock icon shows a red “disabled” symbol, and the UI refuses to load them.
Environment:
OS: Windows 10
Previous Version: Antigravity 1.16.5 (Everything worked perfectly)
Current Version: Antigravity 1.18.x/1.19.x (Latest)
Model: Claude 4.6 Sonnet / Gemini
The Core Issue:
The update seems to have completely broken the indexing for any conversation that wasn’t explicitly bound to a local folder via File -> Open Folder at the time of creation.
Projects bound to explicit local paths (e.g., D:\Work\MyProject) ARE recognized by the new version and work fine.
“Scratch” sessions / Direct conversations (where I just opened the IDE and started chatting without a specific folder) ARE LOST. These were saved by default in C:\Users\Tom\.gemini\antigravity\scratch\... or the global brain database.
What I have already tried (and failed):
I’ve spent hours trying to force the new version to rebuild its ChatSessionStore.index, but nothing works:
Adding paths to Workspace: Manually added the scratch root directory and specific subdirectories via the Agent Manager. UI still shows nothing.
Explicitly Opening Folders: Used File -> Open Folder to open the exact scratch subdirectories where the old files live. No history loads.
The API list_dir trick: Asked the Agent to recursively list_dir on ~/.gemini/antigravity/brain to force a file system watch trigger. It executed successfully, but the UI history didn’t refresh.
Downgrading & Relinking: Downgraded to 1.16.5 (where the history is visible again, but the server rejects prompts asking to upgrade). I tried to bind those floating sessions to solid local folders while in 1.16.5, but upon re-upgrading to 1.18.x/1.19.x , they still disappear.
Agent Manager UI toggling: Rapidly expanding/collapsing workspaces to force a UI refresh. Did not work.
My Question:
My underlying .pb files, implementation_plan.md, and task.md files are all perfectly safe on my drive. The issue is purely that the new IDE’s index refuses to map them to the UI.
Has anyone figured out how to manually edit the local database/index files to force the new version to recognize these old scratch sessions? Or is there a specific migration script/tool available? Any deep-dive workarounds would be hugely appreciated!
that’s why i say move on until they fix it in another release. what option do we have? Heard from someone else that they reverted back to 1.18 but it exists there now also. Go figure.
The historical conversation is gone, so sad. And when using a lower version, it prompts that you need to upgrade to the latest version. It’s really frustrating.
Thank you for sharing the chat history issue. I have forwarded your report with the internal team currently investigating the matter; your insights will be instrumental to our troubleshooting process.
Same Bug Report: Missing Conversation History in Global Context (No Workspace)
Describe the bug
When using Antigravity without an active workspace (no folder opened), recent conversations are instantiated and stored on the backend, but they do not appear in the “Recent” conversations dropdown menu. Only conversations associated with a specific local workspace/directory (e.g., /d:/folder) are displayed in the history.
As a result, users cannot resume “global” conversations from the UI once the session is closed, even though the data still exists on the server side.
To Reproduce
Steps to reproduce the behavior:
Open Antigravity (VS Code fork) without opening any folder or workspace (Fichier > Fermer le dossier).
Start a new conversation with the AI agent and exchange a few messages.
Reload the window (Developer: Reload Window).
Click on the conversation history dropdown.
Notice that the recently created conversation is missing from the “Recent” list. Only older conversations tied to specific directories are visible.
Expected behavior
Conversations created in a global context (without an active workspace) should be visible and accessible in the conversation history dropdown, ideally grouped under a “Global” or “No Workspace” category, so they can be resumed later.
Environment
OS: Windows
Editor:
Version : Antigravity
Validation : 1.19.6
Date : 1.107.0 (user setup)
Electron : d2597a5c475647ed306b22de1e39853c7812d07d
ElectronBuildId : 2026-02-26T23:07:23.202Z
Chromium : 39.2.3
Node.js : 142.0.7444.175
V8 : 22.21.1
Système d’exploitation : 14.2.231.21-electron.0
I had the same issue and did everything to fix it.
I couldn’t fix it. Downgrading the app version helped to see previous chat history, but it made impossible to talk with agents.
This needs to be fixed asap. This is a literal sev 1 issue that makes the environment completely unusable. Just installed Antigravity today - please don’t make me go back to Cursor.
Thank you so much for providing such a detailed solution, but it still didn’t work for me. Whether I copy the file ~/.gemini/installation_id to ~/.gemini/antigravity/installation_id, or copy ~/.gemini/antigravity/installation_id to ~/.gemini/installation_id, my computer doesn’t seem to be able to open the history sessions that worked in the previous version (1.16.5).
I am deleting my reply because it stopped working for me either.
It was working perfectly for quite a while, until suddenly it stopped. Right in the middle of something – everything is just gone. From disk either. The directories where it used to keep its tasks and walkthroughs – just gone. Empty.
