Headless Tiptap: Ordered List numbering differs from Simple UI (@tiptap/extension-ordered-list)

[ParhamZare]

When using @tiptap/extension-ordered-list in headless mode, the ordered list numbering does not behave the same as in the Simple UI demo.
In Simple UI, nested ordered lists use different numbering styles (decimal → lower-alpha → lower-roman), but in headless mode, all levels render as decimals.

Steps to Reproduce:

Initialize a headless Tiptap editor with @tiptap/extension-ordered-list.

Create a nested ordered list with at least 3 levels.

Compare the rendering with the Tiptap Simple UI demo.

Expected Behavior:

1st level list → decimal numbers (1, 2, 3...)

2nd level list → lower-alpha letters (a, b, c...)

3rd level list → lower-roman numerals (i, ii, iii...)

Actual Behavior:

All levels render as decimal numbers (1, 2, 3...).

Temporary Solution (CSS fix):

/* Top level numbers */
.tiptap-editor ol {
  list-style-type: decimal !important;
}

/* Second level uses letters */
.tiptap-editor ol ol {
  list-style-type: lower-alpha !important;
}

/* Third level uses roman numerals */
.tiptap-editor ol ol ol {
  list-style-type: lower-roman !important;
}