Xcode 26.6 Coding Assistant Issues
First reported on 9to5mac on June 26, 2026.
Users are experiencing issues with the coding assistant in Xcode 26.6, causing problems with code completion and syntax highlighting.
What it looks like
- Coding assistant issues
- Code completion and syntax highlighting problems
How to fix it
- Restart the Xcode app.
- Check for any software updates for Xcode and install them.
- Try reinstalling Xcode to its default settings.
- Wait for the vendor to ship a fix — there is no user-side workaround yet.
Affected products
- Xcode 26.6
Sources
Search terms covered: xcode 26.6 coding assistant issues, code completion problems