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[BUG]: UI Freezes for a few minutes if repo has binary files #4084

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#4109
Closed
[BUG]: UI Freezes for a few minutes if repo has binary files#4084
#4109
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bugSomething isn't workingopentuiThis relates to changes in v1.0, now that opencode uses opentui

Description

@istarkov
istarkov
opened on Nov 8, 2025

Description

Started here
#3776 (comment)

If the agent generates binary files (for example, images),

https://github.com/sst/opencode/blob/34ff87d504836ff71b3bb2d466842c00ee3c5ec2/packages/opencode/src/snapshot/index.ts#L143

diffFull returns the binary content encoded as strings in the before and after fields.

A 4 MB image becomes a 20 MB+ string.

Image Image

This causes the UI to freeze for minutes likely due to memory allocation/copy etc issues after new prompt. (depends on amount of binary content)

There’s also a noticeable delay (a few seconds) when switching sessions (especially child sessions).

For AI related work it can be huge non binary files, such as CSVs and others.

⸻

What to do?

Fix
#4109

OpenCode version

1.0.45

Steps to reproduce

Generate images or/and binary files

Screenshot and/or share link

#3776 (comment)

Operating System

macOs 26

Terminal

iTerm 2

Activity

  1. istarkov
    added
    bugSomething isn't working
    on Nov 8, 2025
  2. github-actions
    added
    opentuiThis relates to changes in v1.0, now that opencode uses opentui
    on Nov 8, 2025

  3. github-actions commented on Nov 8, 2025

    @github-actions
    github-actionsBot
    on Nov 8, 2025 – with GitHub Actions
    Contributor

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

    Feel free to ignore if none of these address your specific case.

  4. rekram1-node
    closed this as completedin #4109on Nov 9, 2025
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