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Web UI retains 40 full session transcripts #46119
Description
Description
The web UI keeps message and part data for 40 recently opened sessions, while nearby-session prefetch keeps 10. In a Playwright run that visited 50 sessions, the page retained 134.4 MB of JS heap after GC. Limiting the same cache to 10 sessions retained 72.5 MB in the same run. This extra retained data increases memory use in long-lived web and desktop renderers.
Plugins
Not relevant
OpenCode version
1.18.25
Steps to reproduce
- Open the web UI.
- Visit 40 or more sessions.
- Force GC and inspect
Runtime.getHeapUsagewith CDP.
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Operating System
macOS 26.6
Terminal
Not relevant
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thdxr commentedon Oct 11, 2026
Thanks for the report! OpenCode 2.0 is now out and development is focused on V2, so we're closing issues filed against OpenCode 1. Please upgrade (
opencode upgrade --major, details: https://anoma.ly/notes/opencode-2-0), and if this is still relevant on 2.0, reopen this issue or open a new one with your 2.0 version.— from 𝕺𝖕𝖊𝖓𝕮𝖔𝖉𝖊