Bug: Answers Are Internally Truncated Unpredictably
Open 💬 7 comments Opened Jul 31, 2026 by johnaweiss
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
(not duplicate of https://github.com/openai/codex/issues/36112)
What version of Codex CLI is running?
codex-cli 0.146.0
What subscription do you have?
Plus
Which model were you using?
gpt-5.6-luna low
What platform is your computer?
Microsoft Windows NT 10.0.26200.0 x64
What terminal emulator and version are you using (if applicable)?
WSL/PS7
Codex doctor report
{
"schemaVersion": 1,
"generatedAt": "1785514400s since unix epoch",
"overallStatus": "ok",
"codexVersion": "0.146.0",
"checks": {
"app_server.status": {
"id": "app_server.status",
"category": "app-server",
"status": "ok",
"summary": "background server is not running",
"details": {
"control socket": "/home/devuser/.codex/app-server-control/app-server-control.sock",
"daemon state dir": "/home/devuser/.codex/app-server-daemon",
"mode": "ephemeral",
"pid file": "/home/devuser/.codex/app-server-daemon/app-server.pid (missing)",
"settings": "/home/devuser/.codex/app-server-daemon/settings.json (missing)",
"status": "not running",
"update-loop pid file": "/home/devuser/.codex/app-server-daemon/app-server-updater.pid (missing)"
},
"remediation": null,
"durationMs": 0
},
"auth.credentials": {
"id": "auth.credentials",
"category": "auth",
"status": "ok",
"summary": "auth is configured",
"details": {
"auth file": "/home/devuser/.codex/auth.json",
"auth storage mode": "File",
"stored API key": "false",
"stored ChatGPT tokens": "true",
"stored agent identity": "false",
"stored auth mode": "chatgpt"
},
"remediation": null,
"durationMs": 0
},
"config.load": {
"id": "config.load",
"category": "config",
"status": "ok",
"summary": "config loaded",
"details": {
"CODEX_HOME": "/home/devuser/.codex",
"config.toml": "/home/devuser/.codex/config.toml",
"config.toml parse": "ok",
"cwd": "/mnt/c/Users/Naj/git/daemon",
"enabled feature flags": "shell_tool, unified_exec, shell_snapshot, code_mode_host, terminal_resize_reflow, sqlite, hooks, enable_request_compression, multi_agent, apps, tool_search_always_defer_mcp_tools, tool_suggest, plugins, in_app_browser, in_app_updates, browser_use, browser_use_full_cdp_access, browser_use_external, computer_use, remote_plugin, plugin_sharing, image_generation, resize_all_images, item_ids, skill_mcp_dependency_install, skill_search, mentions_v2, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, auth_elicitation, personality, fast_mode, tui_app_server, remote_compaction_v2, workspace_dependencies",
"feature flag overrides": "none",
"feature flags enabled": "38",
"log dir": "/home/devuser/.codex/log",
"mcp servers": "0",
"model": "gpt-5.6-luna",
"model provider": "openai",
"sqlite home": "/home/devuser/.codex"
},
"remediation": null,
"durationMs": 0
},
"git.environment": {
"id": "git.environment",
"category": "git",
"status": "ok",
"summary": "git version 2.55.0",
"details": {
".git entry": "directory",
"PATH git #1": "/usr/sbin/git",
"PATH git #2": "/usr/bin/git",
"PATH git #3": "/sbin/git",
"PATH git #4": "/bin/git",
"PATH git entries": "4",
"git branch": "main",
"git build options": "git version 2.55.0; cpu: x86_64; built from commit: e9019fcafe0040228b8631c30f97ae1adb61bcdc; sizeof-long: 8; sizeof-size_t: 8; shell-path: /bin/sh; rust: enabled; feature: fsmonitor--daemon; gettext: enabled; libcurl: 8.21.0; OpenSSL: OpenSSL 3.6.3 9 Jun 2026; zlib-ng: 2.3.3; SHA-1: SHA1_DC; SHA-256: SHA256_BLK; default-ref-format: files; default-hash: sha1",
"git exec path": "/usr/lib/git-core",
"git version": "git version 2.55.0",
"repo detected": "true",
"repo root": "/mnt/c/Users/Naj/git/daemon",
"selected git": "/usr/sbin/git"
},
"remediation": null,
"durationMs": 100
},
"installation": {
"id": "installation",
"category": "install",
"status": "ok",
"summary": "installation looks consistent",
"details": {
"PATH codex #1": "/usr/sbin/codex",
"PATH codex #2": "/usr/bin/codex",
"PATH codex #3": "/sbin/codex",
"PATH codex #4": "/bin/codex",
"PATH codex entries": "4",
"current executable": "/usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin/codex",
"install context": "npm (package /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl, bin /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin, resources /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-resources, path /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path)",
"managed by bun": "false",
"managed by npm": "true",
"managed by pnpm": "false",
"managed package root": "/usr/lib/node_modules/@openai/codex",
"npm update target": "/usr/lib/node_modules/@openai/codex"
},
"remediation": null,
"durationMs": 124
},
"mcp.config": {
"id": "mcp.config",
"category": "mcp",
"status": "ok",
"summary": "no MCP servers configured",
"details": {},
"remediation": null,
"durationMs": 0
},
"network.env": {
"id": "network.env",
"category": "network",
"status": "ok",
"summary": "network-related environment looks readable",
"details": {
"proxy env vars": "none"
},
"remediation": null,
"durationMs": 0
},
"network.provider_reachability": {
"id": "network.provider_reachability",
"category": "reachability",
"status": "ok",
"summary": "active provider endpoints are reachable over HTTP",
"details": {
"ChatGPT base URL": "https://chatgpt.com/backend-api/ reachable (HTTP 404)",
"reachability mode": "ChatGPT auth"
},
"remediation": null,
"durationMs": 191
},
"network.websocket_reachability": {
"id": "network.websocket_reachability",
"category": "websocket",
"status": "ok",
"summary": "Responses WebSocket handshake succeeded",
"details": {
"DNS": "2 IPv4, 2 IPv6, first IPv4",
"auth mode": "chatgpt",
"connect timeout": "15000 ms",
"endpoint": "wss://chatgpt.com/backend-api/<redacted>",
"handshake result": "HTTP 101 Switching Protocols",
"model provider": "openai",
"models etag present": "true",
"provider name": "OpenAI",
"proxy env vars": "none",
"reasoning header": "false",
"server model present": "false",
"supports websockets": "true",
"wire API": "responses"
},
"remediation": null,
"durationMs": 634
},
"runtime.provenance": {
"id": "runtime.provenance",
"category": "runtime",
"status": "ok",
"summary": "running npm on linux-x86_64",
"details": {
"commit": "unknown",
"current executable": "/usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin/codex",
"install method": "npm (package /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl, bin /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin, resources /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-resources, path /usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path)",
"platform": "linux-x86_64",
"version": "0.146.0"
},
"remediation": null,
"durationMs": 0
},
"runtime.search": {
"id": "runtime.search",
"category": "search",
"status": "ok",
"summary": "search is OK (bundled)",
"details": {
"search command": "/usr/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path/rg",
"search command readiness": "file exists",
"search provider": "bundled"
},
"remediation": null,
"durationMs": 0
},
"sandbox.helpers": {
"id": "sandbox.helpers",
"category": "sandbox",
"status": "ok",
"summary": "sandbox configuration is readable",
"details": {
"approval policy": "OnRequest",
"codex-linux-sandbox helper": "/home/devuser/.codex/tmp/arg0/codex-arg0rbNFJi/codex-linux-sandbox",
"execve wrapper helper": "/home/devuser/.codex/tmp/arg0/codex-arg0rbNFJi/codex-execve-wrapper",
"filesystem sandbox": "restricted",
"network sandbox": "restricted"
},
"remediation": null,
"durationMs": 0
},
"state.paths": {
"id": "state.paths",
"category": "state",
"status": "ok",
"summary": "state paths and databases are inspectable",
"details": {
"CODEX_HOME": "/home/devuser/.codex (dir)",
"active rollout files": "4 files, 7078293 total bytes, 1769573 average bytes",
"archived rollout files": "0 files, 0 total bytes, 0 average bytes",
"goals DB": "/home/devuser/.codex/goals_1.sqlite (file)",
"goals DB integrity": "ok",
"log DB": "/home/devuser/.codex/logs_2.sqlite (file)",
"log DB integrity": "ok",
"log dir": "/home/devuser/.codex/log (missing)",
"memories DB": "/home/devuser/.codex/memories_1.sqlite (file)",
"memories DB integrity": "ok",
"sqlite home": "/home/devuser/.codex (dir)",
"state DB": "/home/devuser/.codex/state_5.sqlite (file)",
"state DB integrity": "ok",
"thread history DB": "/home/devuser/.codex/thread_history_1.sqlite (missing)",
"thread history DB integrity": "skipped (missing)"
},
"remediation": null,
"durationMs": 90
},
"state.rollout_db_parity": {
"id": "state.rollout_db_parity",
"category": "threads",
"status": "ok",
"summary": "rollout files and state DB thread inventory agree",
"details": {
"default model provider": "openai",
"rollout DB active files": "4",
"rollout DB active rows": "4",
"rollout DB archive mismatches": "0",
"rollout DB archived files": "0",
"rollout DB archived rows": "0",
"rollout DB duplicate DB paths": "0",
"rollout DB duplicate rollout thread ids": "0",
"rollout DB malformed file names": "0",
"rollout DB missing active rows": "0",
"rollout DB missing archived rows": "0",
"rollout DB model providers": "openai=4",
"rollout DB rows": "4",
"rollout DB scan cap reached": "false",
"rollout DB scan errors": "0",
"rollout DB sources": "cli=4",
"rollout DB stale rows": "0"
},
"remediation": null,
"durationMs": 71
},
"system.environment": {
"id": "system.environment",
"category": "system",
"status": "ok",
"summary": "OS language C",
"details": {
"EDITOR": "not set",
"LANG": "C.UTF-8",
"VISUAL": "not set",
"os": "Arch Linux [64-bit]",
"os language": "C",
"os type": "Arch Linux",
"os version": "Unknown"
},
"remediation": null,
"durationMs": 19
},
"terminal.env": {
"id": "terminal.env",
"category": "terminal",
"status": "ok",
"summary": "terminal metadata was detected",
"details": {
"DISPLAY": "present",
"WAYLAND_DISPLAY": "present",
"WSL_DISTRO_NAME": "present",
"WSL_INTEROP": "present",
"WT_SESSION": "present",
"color output": "enabled",
"effective locale": "C.UTF-8",
"stderr is terminal": "true",
"stdin is terminal": "true",
"stdout is terminal": "true",
"terminal": "Windows Terminal",
"terminal size": "133x35"
},
"remediation": null,
"durationMs": 0
},
"terminal.title": {
"id": "terminal.title",
"category": "title",
"status": "ok",
"summary": "terminal title default",
"details": {
"terminal title activity": "true",
"terminal title items": "activity, project-name",
"terminal title project source": "git repo root",
"terminal title project value": "daemon",
"terminal title source": "default"
},
"remediation": null,
"durationMs": 1
},
"updates.status": {
"id": "updates.status",
"category": "updates",
"status": "ok",
"summary": "update configuration is locally consistent",
"details": {
"cached latest version": "0.146.0",
"check for update on startup": "true",
"last checked at": "2026-07-31T14:22:49.453256538Z",
"latest version": "0.146.0",
"latest version status": "current version is not older",
"npm update target": "/usr/lib/node_modules/@openai/codex",
"update action": "npm install -g @openai/codex",
"version cache": "/home/devuser/.codex/version.json"
},
"remediation": null,
"durationMs": 527
}
}
}What issue are you seeing?
Some answers are getting truncated. When they are first displayed, the full answer is visible. After i reply, then if i scroll up, the full answer is no longer visible.
original five-item answer:
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/71201ab8-41d3-430f-97ec-725fdf773b98" />
my quoting of one item from the list -- the item now missing from the list.
<img width="1876" height="354" alt="Image" src="https://github.com/user-attachments/assets/aa879448-1483-467a-9d93-72233509760d" />
scroll up and see only four visible items.
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/5e5df819-8f51-4f99-93fd-7d54031763fb" />
agent knows it gave me five items. The title of the missing item matches what i quoted in my reply.
<img width="898" height="417" alt="Image" src="https://github.com/user-attachments/assets/3876a992-aee5-48c4-987c-04c2f6f3eb33" />
<img width="1870" height="274" alt="Image" src="https://github.com/user-attachments/assets/351cba52-5f31-45f2-9651-81e1e60928d3" />
scroll up and see the missing item magically restored:
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/71201ab8-41d3-430f-97ec-725fdf773b98" />
What steps can reproduce the bug?
- submit a query which outputs a list.
- copy one item in the list by highlighting with mouse, and then CTRL-SHIFT-c
- begin to type your reply, and paste in the copied text
- scroll up. The list is truncated. The copied item, or some other item, is missing.
- ask agent to repeat full text of missing item
- the missing item now reappears in the previous answer
What is the expected behavior?
nothing in the history should disappear
Additional information
this is a blocker
Another example, showing where the title of one entry, which was originally visible when first generated, is now missing.
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/05e5a190-3174-4a64-8b97-3571f99e36e2" />
7 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
Powered by Codex Action
Another example, in this case the user reply has vanished. How is this not a high-priority issue?
<img width="957" height="128" alt="Image" src="https://github.com/user-attachments/assets/8c27a05a-e6da-4108-bf5c-f248b4329bb9" />
this is insane. As i'm typing my replies, one line after another gets removed from agent's last reply. Is this supposed to be a "helpful" feature???? You can watch it in real time in this video. Watch line at the top starting with
- _exit(). I scroll down, then i scroll back up. When i scroll back up, it's gone.https://github.com/user-attachments/assets/33f3d34d-5f08-42dd-8f01-99b55e60b64a
another example. Parts of answers appear and disappear constantly.
<img width="139" height="238" alt="Image" src="https://github.com/user-attachments/assets/56a161e0-ccb6-40bb-a08f-b5d2b19594f8" /> <img width="121" height="180" alt="Image" src="https://github.com/user-attachments/assets/9f8ad044-45be-412e-adef-a53deddfd7ac" />
another example, showing user queries got blanked just 5 pages back in history
https://github.com/user-attachments/assets/9bda625d-4117-4699-b894-985a4ae6c975
another example. I watched this text get truncated while i was watching it. You can see it no longer makes grammatical or semantic sense, because a chunk of text was pulled from the middle."
<img width="959" height="100" alt="Image" src="https://github.com/user-attachments/assets/d798016c-52ff-4bc2-b5e3-bfaa86a48c12" />
another example. This is a major bug. Why neglected?
<img width="959" height="113" alt="Image" src="https://github.com/user-attachments/assets/88dd15c8-b727-45aa-9464-094ab2f9d0bb" />