Typography component is not picking up the theme from the ThemeProvider

[Kulodo]

Steps to reproduce

Steps:

1. Open this link to live example: (required) https://codesandbox.io/p/sandbox/l9tkcj

Current behavior

The Typography component with text Heading 1 is displayed using the default theme eg fontSize is 6rem.

Expected behavior

The Typography component should pick up the theme provided by the ThemeProvider. i.e The font size of the h1 should therefore be 1rem as defined in the theme. The color should also be green.

Context

I am trying to apply a theme using ThemeProvider to the Typography component.
Note I am importing mui and react from esm.sh.
Interestingly if I append the import urls with '?dev' then the Typography component does pick up the theme from the ThemeProvider correctly.

Your environment

The live example is at https://codesandbox.io/p/sandbox/l9tkcj
I am using esm.sh to import.

Search keywords: Typography ThemeProvider