Upgrading to 5.16.1 ignores defaultProps in MUI theme

[cvollmer]

Steps to reproduce

Link to live example: https://codesandbox.io/p/sandbox/react-mui-forked-r9hlwm

Steps:

1. If I set the mui package versions to ~5.15 in package.json, it works and I see the defaultprop of contained on buttonbase applied.
2. if I set the muil package versions to ~5.16, I get the following error: Could not find module in path: '@mui/material/InitColorSchemeScript/InitColorSchemeScript' relative to '/node_modules/@mui/material/styles/CssVarsProvider.js'

Current behavior

an error happens if the app uses the latest release of mui and I can't apply defaultProps in the theme.

Expected behavior

using version 5.16.1 should function like 5.15.21

Context

I had my app set to ^5.15.21 which automatically used 5.16.1 when it was released and that broke my site. I have it locked to ~5.15 now but will need to upgrade at some point.

Your environment

npx @mui/envinfo

  Don't forget to mention which browser you used.
  Output from `npx @mui/envinfo` goes here.

Search keywords: defaultprops ignored

[siriwatknp]

@cvollmer From the link you provided, it works for me. Can you try v5.16.3 in your project?

If you have @mui/system explicitly installed, please update it to v5.16.3 too or delete it from the package.json because it is already a dependency of @mui/material.