sheet does not recognize symbols from the extended cheat sheet

[jo-pol]

5-legged spider does not work as

https://d-bl.github.io/GroundForge/sheet?patch=1446,7w71,w277,2778,84y4,446y;checker

the ws and y's are ignored replaced by dashes a swatch is generated

https://d-bl.github.io/GroundForge/sheet?patch=1446,7-71,-277,2778,84-4,446-;checker

The pattern can be manually fixed

An aside: the download is called thread-diagram, it should be pricking.