Repeated occurrences of "OpenCode is not responding" on Windows 11 #33587

Description

An option to Export Logs is prompted. After choosing this, I asked OpenCode to evaluate the logs that were generated. Here's what it replied with:

Here's the log analysis summary:

OpenCode: v

opencode-debug-20260624T032200.zip

, Windows, Electron 42.3.3

Key issues found:
Renderer unresponsive (5 occurrences) — The UI thread blocks on execEditLength / LineDiff.diffWithOptionsObj during session review diff computation. Each freeze lasts 3-10 seconds. This is the most likely cause of the perceived slowness.
Repeated dependency install failures — Every startup logs:
WARN: background dependency install failed
error: @opencode-ai/plugin: No matching version found for @opencode-ai/plugin@local
This triggers twice per boot but doesn't appear fatal.

LSPs/Formatters disabled — All LSPs and formatters are disabled ("all LSPs are disabled"), so no formatting slowdowns from that angle.
Bottom line
The slowness is coming from the renderer/UI — specifically LineDiff.diffWithOptionsObj (in session-CS5JjKv9.js:7033) blocking on diff computation while rendering the session review panel. The server-side (model calls) looks healthy — no errors, normal LLM loop timing. Recommend reporting this at https://github.com/anomalyco/opencode/issues with the "renderer unresponsive" samples from the window log.

Plugins

none

OpenCode version

1.17.9 desktop

Steps to reproduce

Run OpenCode on Windows and navigate between sessions

Screenshot and/or share link

Operating System

Windows 11

Terminal

No response