Opening https://beautifulwebtype.com/zilla-slab/ in Chrome or Edge doesn't display the four different figure sets, but only the default figures. In firefox it is right. Does anyone know more about this issue?
But when an extra gylph is added to Chrome it works....???
An explanation here would be that since digits are assigned Common script, Chrome is trying to shape them with DFLT OpenType script and the font does not have lookups under DFLT script. Adding a Latin letter will cause them to be shaped with latn OpenType script. Firefox may be falling to Latin when no script is detected.
Comments
you can do that like this
lookup xxxx_a {
sub a by b;
} xxxx_a;
script latn;
lookup xxxx_a;
} xxxx;