I also got missing symbols in the Windowed (Last 5 seconds) recording mode in Xcode 15.3 with an iPhone 14 pro (iOS 16.7.2).
Everything works fine with the Deferred recording mode (File > Recording Options... > Recording Mode, in Global Options at the bottom).
The same project works fine with both recording modes in Xcode 14.
Also confirmed this behaviour with a project created from the unmodified "Game" Xcode template.
tocab
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution