Show style doesn't work

Scripting
1

I have trouble with The Show Style option,
When I try to preview variations of Stems, It doesn’t work.
Does anyone have any solution?

Thanks,

Screen Shot 2023-06-11 at 10.51.47
Screen Shot 2023-06-11 at 10.51.471772×1688 295 KB

2

What do you mean by variations of stems?

3

View in different font weights.

4

Check out this thread: