I think I fixed it

Author: GabrielTofvesson

MLAPI/NetworkingManagerComponents/Binary/BitReader.cs

@@ -70,9 +70,9 @@ public byte ReadByte()
         public void SkipPadded()     => bitCount += (8 - (bitCount % 8)) % 8;
         public ushort ReadUShort()   => (ushort)ReadULong();
         public uint ReadUInt()       => (uint)ReadULong();
-        public sbyte ReadSByte()     => (sbyte)ZigZagDecode(ReadByte());
-        public short ReadShort()     => (short)ZigZagDecode(ReadUShort());
-        public int ReadInt()         => (int)ZigZagDecode(ReadUInt());
+        public sbyte ReadSByte()     => (sbyte)ZigZagDecode(ReadULong());
+        public short ReadShort()     => (short)ZigZagDecode(ReadULong());
+        public int ReadInt()         => (int)ZigZagDecode(ReadULong());
         public long ReadLong()       => ZigZagDecode(ReadULong());
 
         public float[] ReadFloatArray(int known = -1)                   => ReadArray(ReadFloat, known);

MLAPI/NetworkingManagerComponents/Binary/BitWriter.cs

@@ -358,8 +358,8 @@ private static Type GetUnsignedType(Type t) =>
             t == typeof(int) ? typeof(uint) :
             t == typeof(long) ? typeof(ulong) :
             null;
-
-        public static ulong ZigZagEncode(long d) => (ulong)(((d >> 63)&1) | (d << 1));
+        
+        public static ulong ZigZagEncode(long d) => (ulong)(((d >> 63) & 1) | (d << 1));
 
         public static long GetBitCount<T>(T t)
         {