I'm experiencing a similar issue with Xcode 14.2 on MacOS 13.2.1. The working directory from the Xcode scheme 'Profile' (a relative path) appears in Instruments target chooser (as the absolute path), but has no effect. In my case the actual working directory remains the default (i.e. the one containing the executable), rather than becoming root. The same working directory in the Xcode scheme 'Run' is used successfully, so it does look like an Instruments problem, not an Xcode one.