With date-fns adapter, date picker date formatting for days of month < 10 always has zero padding, even when format specifies otherwise.

[palfvin]

Steps to reproduce

Link to live example (based on documentation example)

https://codesandbox.io/embed/recursing-shockley-xshcg6?fontsize=14&hidenavigation=1&theme=dark

Current behavior

Using the datefnsv3 localization adapter (at least), the day of month shows with zero padding for days < 10 when the "d" specifier is used in the value of the format prop.

Expected behavior

There should be no zero padding for days < 10.

Context

I don't want zero padding.

Your environment

npx @mui/envinfo

  I used the Chrome browser
  System:
    OS: macOS 14.3.1
  Binaries:
    Node: 18.15.0 - ~/.nvm/versions/node/v18.15.0/bin/node
    npm: 9.5.0 - ~/.nvm/versions/node/v18.15.0/bin/npm
    pnpm: Not Found
  Browsers:
    Chrome: 122.0.6261.112
    Edge: Not Found
    Safari: 17.3.1
  npmPackages:
    @emotion/react: ^11.11.4 => 11.11.4 
    @emotion/styled: ^11.11.0 => 11.11.0 
    @mui/base:  5.0.0-beta.38 
    @mui/core-downloads-tracker:  5.15.12 
    @mui/material: ^5.15.12 => 5.15.12 
    @mui/private-theming:  5.15.12 
    @mui/styled-engine:  5.15.11 
    @mui/system:  5.15.12 
    @mui/types:  7.2.13 
    @mui/utils:  5.15.12 
    @mui/x-date-pickers: ^6.19.6 => 6.19.6 
    @types/react:  18.2.62 
    react: ^17.0.2 => 17.0.2 
    react-dom: ^17.0.2 => 17.0.2 
    typescript:  4.8.4 

Search keywords: date-picker date-fns format

Search keywords:

[LukasTy]

Hello @palfvin
It is the behavior we have decided upon to have less headache when working with FormData.
If you specifically need a format without leading zeros, please check this documentation section for more information.

I'm closing this issue as it's the expected behavior. 😉
If you feel that there is still something wrong with it—feel free to reopen the issue.

[github-actions]

⚠️ This issue has been closed.
If you have a similar problem, please open a new issue and provide details about your specific problem.
If you can provide additional information related to this topic that could help future readers, please feel free to leave a comment.

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