Can't using Html label <sup> in Marp for VS code

[imllt-l]

Version of Marp Tool

Marp for VS Code v2.7.0

Operating System

macOS

Environment

• OS version: [e.g. Windows 10 / macOS Big Sur 11.4 / Ubuntu 20.04.2]
• Node.js version (Marpit / Marp Core/ Marp CLI): [e.g. Node.js 14.17.1]
• VS Code version (Marp for VS Code): [e.g. VS Code 1.57.1]

How to reproduce

To enable HTML in the vs code settings and use the label after the slide not presented the footnote ,it only have a blank in the silde view

Expected behavior

have a footnote before the text

Actual behavior

only have a blank in the silde view

Additional information

No response

[yhatt]

This issue could be simplified to that inline elements with position: relative not showing up in VS Code's Marp preview.

---
marp: true
---

# Hello, <span style="position: relative;">world</span>!