Button: LinkComponent in Theme is not used

[BennyAlex]

Steps to reproduce

Previously in v5 I defined the LinkComponent inside theme

MuiButton: {
  defaultProps: {
    LinkComponent: MyLink
}

and it worked fine.

Not this doesnt work anymore. I only see my link component when I do it manually for each button like: https://mui.com/material-ui/integrations/routing/#button

Current behavior

No response

Expected behavior

No response

Context

No response

Your environment

npx @mui/envinfo

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

Search keywords: LinkComponent

[sai6855]

Not this doesnt work anymore.

@BennyAlex what do you mean by, This doesn't work anymore? would you mind providing a repro in a sandbox please?

In this sandbox, i can see a being rendered when LinkComponent is passed in theme

https://stackblitz.com/edit/react-ndqyxk?file=Demo.tsx

[BennyAlex]

@sai6855

https://stackblitz.com/edit/react-ndqyxk-run8w3?file=tsconfig.json,Router.jsx,RouterLink.jsx,Home.tsx,BaseRoute.jsx,Demo.jsx,index.tsx

(click go to demo)

This shows the error and also it looks like all default Props are ignored for some reason.

It should show outlined buttons by default and replace the link with the link from the url mapping.

[BennyAlex]

The same code worked fine with mui v5

[sai6855]

@BennyAlex Few imports are missing in your repro, can you add missing imports in this file and check again? https://stackblitz.com/edit/react-ndqyxk-run8w3?file=RouterLink.jsx

[BennyAlex]

@sai6855 https://stackblitz.com/edit/react-ndqyxk-run8w3?file=RouterLink.jsx,Home.tsx

should be there now, still the same behaviour

[sai6855]

@BennyAlex I've updated version of @mui/material to 5.16.7 in you repor but still behaviour is same. when you say it was working in v5, which version were you on?

https://stackblitz.com/edit/react-ndqyxk-yvvn19?file=package.json

[BennyAlex]

I was also on the latest I think. But it should work or whats the reason that the defaultProps are not applied? The other stuff from theme seams to be applied correctly

[sai6855]

@BennyAlex Found the issue, defaultProps are not being applied because you imported ThemeProvider from @emotion/react not from @mui/material in this file https://stackblitz.com/edit/react-ndqyxk-buu58f?file=BaseRoute.jsx

updated import in below sandbox, it's working now

https://stackblitz.com/edit/react-ndqyxk-buu58f?file=BaseRoute.jsx

[github-actions[bot]]

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[sai6855]

@BennyAlex feel free to re-open the issue, if you face any issues