As reported by @icanhasjonas in https://github.com/neuecc/MessagePack-CSharp/commit/ddbf8a6934a3285cc8bb76cd6f8fae58768a9522#r106250389: It looks like `UnsafeUnmanagedStructReadOnlySequenceFormatter.Serialize` misses advancing the `destination` pointer for each loop.
As reported by @icanhasjonas in ddbf8a6#r106250389:
It looks like
UnsafeUnmanagedStructReadOnlySequenceFormatter.Serializemisses advancing thedestinationpointer for each loop.