It seems that symbols such as class/struct/method/property that begin with underscore will automatically be excluded from the documentation

You can use the following commad: xcrun xcresulttool merge /path/to/A.xcresult /path/to/B.xcresult --output-path merged.xcresult

Meet the same problem in Xcode 13.2 I just used rm -rf /path/to/C/clang/ModuleCache command to delete ModuleCache and it works now

Check if you are building simulator product under x86 arch. ios17 simulator failed to launch app built with x86. Consider use ios16