Desktop app becomes non-responsive after ~5 sessions (Ubuntu)

[m-faizan-tariq]

Description

On the official OpenCode desktop app (v1.18.1) on Ubuntu Linux (x86_64), the app becomes non-responsive after creating more than 5 sessions in a single session list.

Steps to Reproduce

1. Install the official OpenCode DEB package on Ubuntu (apt install opencode)
2. Launch OpenCode Desktop
3. Create 5 sessions and interact with each (prompt + response)
4. Start a 6th session — type a prompt and press Enter
5. The Enter button becomes dimmed and unclickable
6. Attempting to switch tabs or close the window hangs the app

Expected Behaviour

The user should be able to create and use any number of sessions without the app freezing.

Actual Behaviour

• Enter button stops responding after ~5 sessions
• Tab switching and window close may hang
• App becomes partially or fully non-responsive

Environment

• OS: Ubuntu Linux (x86_64), Ubuntu 26.04 LTS
• OpenCode version: 1.18.1 (official DEB package)
• Installation method: apt (official repo)
• Desktop environment: GNOME

Additional Notes

• The issue occurs with the official release build, not a development/self-built version
• Not yet confirmed whether the same issue exists on macOS — needs testing
• No error output is visible in the app UI when this occurs (no crash dialog, no console)

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Desktop becomes very slow after long chats and many sessions #34803: Desktop becomes very slow after long chats and many sessions (Ubuntu, same symptom of UI becoming non-responsive after using multiple sessions)
• Desktop app renderer freezes/crashes repeatedly #31594: Desktop app renderer freezes/crashes repeatedly (similar freeze/unresponsive behavior in the desktop app)

If your issue is the same, please add a comment there with any additional details specific to your environment.