Hello,
I'm experiencing consistent crashes of XCPreviewAgent when using Xcode Previews on macOS 26.0.1 Tahoe (25A362).
Configuration:
macOS: 26.0.1 (25A362) - stable release
Xcode: 16.0 (23.0.54) - stable release
Hardware: MacBook Pro M4
Project: SwiftUI iOS app
Issue:
Every time I try to use Xcode Previews, XCPreviewAgent crashes with:
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Subtype: KERN_PROTECTION_FAILURE at 0x0000000340e54000
Termination Reason: Namespace SIGNAL, Code 10, Bus error: 10
The crash occurs in shared memory region during dynamic library loading.
What I've tried:
Cleared all caches: rm -rf ~/Library/Developer/Xcode/DerivedData
Deleted Preview data: rm -rf ~/Library/Developer/Xcode/UserData/Previews
Reset simulators: xcrun simctl --set previews delete all
Switched xcode-select to /Applications/Xcode.app/Contents/Developer
Tried both Xcode stable and Xcode beta
Created fresh simulators
Clean build (Cmd+Shift+K)
Rebooted Mac multiple times
The app runs fine on simulator (Cmd+R), but Previews consistently crash.
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