E.toString/E.toUint8Array - are these working correctly?

>scene
=new Uint16Array(32)
>scene[0]=0;
=0
>scene[1]=5000;
=5000
>scene[4]=44444;
=44444
>scene
=new Uint16Array([0, 5000, 0, 0, 44444,  ... 0, 0, 0, 0, 0])
>buff=new Uint8Array(64);
=new Uint8Array(64)
>E.toUint8Array(scene);
=new Uint8Array([0, 136, 0, 0, 156,  ... 0, 0, 0, 0, 0]) //truncated
>temp=new Uint8Array(64);
=new Uint8Array(64)
>temp.set(scene);
=undefined
>temp
=new Uint8Array([0, 136, 0, 0, 156,  ... 0, 0, 0, 0, 0]) //truncated
>E.toString(scene)
="\x00\x88\x00\x00\x9C\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" //truncated
>temp = E.toUint8Array(E.toString(scene));
=new Uint8Array([0, 136, 0, 0, 156,  ... 0, 0, 0, 0, 0])
>temp=new Uint8Array(scene.buffer)
=new Uint8Array([0, 0, 136, 19, 0,  ... 0, 0, 0, 0, 0]) //not truncated (what I expected the other things to do)

Are those ones that truncate the values instead of splitting them up supposed to behave that way?