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# v0.5.67 — A steadier Summer under the hood

Released September 13, 2026

## Highlights

* Windows picks up where it left off after sleep instead of losing the thread
* Fewer graphics crashes on Mac — the Metal renderer got tougher
* The editor's Agent panels come back when you focus the dock

## Changes

Fixed
* Windows: recover chat and editor state cleanly after sleep/suspend
* macOS: harden Metal rendering (drawable preservation, offscreen queue) against crashes
* Editor: reveal Agent Layout panels on dock focus (SUM-395)
* Editor: guard deferred callbacks, animation preview, scene ops, and documentation/EditorFileSystem lifetimes during teardown
* Bridge: retain executed results and keep native chat polling alive during receipt-queue recovery
* Core: escape every C0 control character in JSON strings
* Rendering: synchronize headless texture RID allocation; fix async resource-load token ownership
* Crash reporting: embed native Sentry destination and forward frames for richer reports

Source: https://www.summerengine.com/changelog/0.5.67

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## Machine-readable resources

- Site index for agents: https://www.summerengine.com/llms.txt
- Full inlined content: https://www.summerengine.com/llms-full.txt
- Porting catalog: https://www.summerengine.com/llms-porting.txt
- Structured catalog: https://www.summerengine.com/agent-catalog.json
- Sitemap: https://www.summerengine.com/sitemap.xml
- Developer resources: https://www.summerengine.com/docs