Games like Forza use NtQueryInformationFile to get the size of the file, to make sure that there's enough room inside it to write data.
Previously, updating the file size (via SetInfoFile(EndOfFile) or WriteFile) wouldn't update the vfs::Entry size field, which NtQueryInfo uses to return the size of the file.
This resulted in the game thinking that the file was smaller than it actually is, and trying to correct that by using SetInfoFile(EndOfFile), which then truncated the file and deleted important data that was written to it.
