[Linux/X11] Typing `/` anywhere crashes Desktop app with SIGTRAP after skills changed (presumably)

What version of the Codex App are you using?

Powered by Codex & OWL
Version: 26.803.81509
Released: August 11, 2026

What subscription do you have?

Not specified.

What platform is your computer?

• Ubuntu 24.04.4 LTS (Noble)
• GNOME (ubuntu:GNOME)
• X11
• x86_64

What issue are you seeing?

Typing / (forward slash) anywhere in a message composer immediately terminates the entire ChatGPT/Codex desktop application.

The crash occurs:

• in both regular ChatGPT and Codex conversations
• when / is the first character
• when / is typed after other text
• on every reproduction attempt

Other special characters, including @ and $, work normally.

The terminal prints:

Trace/breakpoint trap (core dumped)

Slash commands previously worked with the same installed application version. As far as I know, the application itself was not updated between the last working use and the first crash.

What steps can reproduce the bug?

1. Launch the ChatGPT/Codex desktop application.
2. Open a regular ChatGPT conversation or a Codex conversation.
3. Focus the message composer.
4. Type / anywhere in the text.
5. The entire application immediately terminates with Trace/breakpoint trap (core dumped).

The crash occurs every time.

What is the expected behavior?

Typing / should open the slash-command menu without terminating the application.

Possible connection to installed skills

The crash appears to be connected to the installed skill set. After I temporarily moved the installed skills out of their discovery location and restarted the application, typing / worked again and no longer crashed the app. I have not yet isolated which individual skill triggers the failure.

Filesystem timestamps show:

• a batch of personal skills under ~/.agents/skills was installed on August 24, 2026
• Codex-managed system skills under ~/.codex/skills/.system were recreated or refreshed on August 28, 2026
• both locations contain a skill named skill-creator; this may or may not be relevant

<details>
<summary>Skill inventory and filesystem creation dates</summary>

2026-08-28 ~/.codex/skills/.system/{imagegen,openai-docs,plugin-creator,review-agent,skill-creator,skill-installer}

2026-08-24 ~/.agents/skills/{code-review,gitlab-psa-activity-summary,grill-me,grill-with-docs,grilling,handoff,implement,implement-spec,improve-codebase-architecture,prototype,research,resolving-merge-conflicts,to-spec,wayfinder,writing-for-agents}

2026-08-05 ~/.agents/skills/{ask-matt,setup-matt-pocock-skills,teach,to-tickets}

2026-07-29 ~/.agents/skills/{batch-grill-me,claude-api,claude-handoff,codebase-design,design-an-interface,diagnosing-bugs,domain-modeling,edit-article,frontend-design,git-guardrails-claude-code,internal-comms,loop-me,mcp-builder,migrate-to-shoehorn,obsidian-vault,pdf,qa,request-refactor-plan,scaffold-exercises,setup-pre-commit,setup-ts-deep-modules,skill-creator,tdd,to-questionnaire,triage,ubiquitous-language,wizard,writing-beats,writing-fragments,writing-great-skills,writing-shape}

2026-07-28 ~/.agents/skills/{glab-address-discussions,translate-local-and-spreadsheet}
2026-07-27 ~/.agents/skills/find-skills
2026-07-24 ~/.agents/skills/{context7-mcp,find-docs}

These are filesystem creation timestamps and may represent installation, copying, symlink creation, or an automatic refresh rather than authoritative package installation times.

</details>

Additional information

The crash is specifically triggered by /; ordinary input, @, and $ work normally.

Possibly related:

• #38310 — Windows desktop app crashes specifically when typing /
• #39465 — Linux/X11 desktop app crashes with SIGTRAP on editor input