# opencode v1.18.15: message-ordering fixes, compaction history retention, desktop locale coverage

> Maintenance release centred on message chronology: ordering, revert/fork, and session timelines now key off real timestamps rather than message IDs, and repeated compaction keeps earlier tool-call history instead of dropping orphaned results. Desktop gains JSON transcript export and much wider locale coverage.

| | |
|---|---|
| **Tool** | opencode |
| **Version** | v1.18.15 |
| **Kind** | release |
| **Published** | 2026-08-07 |
| **Observed** | 2026-08-11 |
| **Significance** | 2/5 |
| **Breaking** | no |
| **Categories** | fix, feature |

## What changed


**Core fixes**
- Chronological message ordering holds even when imported or legacy message IDs are out of order
- Revert and fork use real message chronology instead of message ID ordering
- Truncation cleanup removes stale files by file timestamp more reliably
- Repeated compaction keeps earlier tool-call history in summaries instead of dropping orphaned results
- Blob-based attachments load correctly in the web UI

**Desktop**
- Much broader locale coverage; missing translations filled in; language names stay native in the locale picker
- Export full session transcripts as JSON from the UI
- Session timelines respect chronological message boundaries; stored messages stay ordered by creation time; session lists sort by persisted activity time

**TUI (community contributions)**
- Clipboard copy works over SSH with tmux `set-clipboard on`
- Cursor style is now configurable


## Sources

- [github_release](https://github.com/anomalyco/opencode/releases/tag/v1.18.15) — retrieved 2026-08-11

## Community

_No curated reactions recorded. Facts and community takes are kept in separate layers
and never blended._

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Canonical: https://changelogs.info/opencode/v1-18-15
Entity: https://changelogs.info/opencode
Event ID: `evt_2026-08-07_opencode_v1-18-15`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.