Product Xcode Version 26.3 (26C5131e) Platform macOS / iOS Simulator / iOS Device Classification Bug / Incorrect UI Behaviour Reproducibility Always (persists across restarts, scheme recreation, DerivedData clearing) Date Encountered February 20, 2026 Hardware Mac mini (M2) running macOS Test Device iPhone SE (2nd generation), iOS 26.3 Summary In Xcode 26.3, attempting to run an iOS app on any simulator destination using Cmd+R fails with the error: A build only device cannot be used to run this target. Please select an available device or choose a simulated device as the destination. This occurs despite the selected destination being a valid iOS Simulator (not a build only device). The same project builds successfully using Cmd+B within Xcode and builds, installs, and runs correctly via the command line using xcodebuild, xcrun simctl, and xcrun devicectl. Steps to Reproduce Open a valid iOS project in Xcode 26.3. The project in question has target name h, product name DiabetesHbA1cPrediction, bundle
0
0
163