shwolf encoding of very small puzzles seems broken

[robx]

e.g. try creating a 1x1 shwolf with a goat, encodes to 1/1/9 which loads empty. Similarly a single goat in r1c1 of 1x2 comes out as 1/2/9 which loads with a fence post.

https://puzz.link/p?type=editor&pzprv3/shwolf/2/1/1%20/.%20/.%20.%20/.%20.%20/.%20.%20///0%20//