Last week I got an interesting bug report from a colleague. They were minding their own business and playing with Unreal Engine 5 when suddenly a wild build error appeared and said that some precompiled headers are out of date: fatal error: file 'D:\toolchain\sysroot\usr\include\x86_64-linux-gnu\bits\wordsize.h' has been modified since the precompiled header 'UE5\Engine\...\SharedPCH.CoreUObject.ShadowErrors.h.gch' was built: mtime changed Hmm, well, it looks like some source files have chang...
