dev server can't run with url endsWith file extensions

[4-1-1]

Describe the bug

Runs ok with normal url

Runs ok with filename url

and broken, when click refresh button.

Reproduction

Every thing is ok in production .
Hard to Reproduction in online.

export default defineConfig(({command}) => {
    return {
    resolve: {
        alias: {
            '@ezone': path.resolve(__dirname, 'node_modules/@ezone'),
            '@': path.resolve(__dirname, 'src'),
            '～@': path.resolve(__dirname, 'src'),
            ...(command === 'serve' ? npmLinkPaths : {}),
        },
    },
    envPrefix: 'REACT_APP',
    esBuild: {
        exclude: ['node_modules'],
        jsxInject: 'import React from \'react\'',
    },
    build: {
        outDir: 'build',
        assetsDir: 'static',
        sourcemap: false,
        rollupOptions: {
            output: {
                manualChunks(id) {
                    if (id.includes('monaco')) {
                        return 'editor';
                    }
                    if (id.includes('prose') || id.includes('markdown')) {
                        return 'markdownEditor';
                    }
                    if (id.includes('aliIcon')) {
                        return 'aliIcon';
                    }
                },
            },
        },
    },
    css: {
        preprocessorOptions: {
            less: {
                modifyVars,
                javascriptEnabled: true,
            },
        },
    },
    optimizeDeps: {
        include: ['lodash'],
    },
    plugins: allPlugins,
    server: {
        https: process.env.REACT_APP_HTTPS,
        watch: {
            followSymlinks: true,
        },
        proxy: {
            '/v1': {
                target: apiProxy,
                logLevel: 'debug',
                changeOrigin: true,
            },
            '/socket.io': {target: wsProxy, ws: true, changeOrigin: true},
        },
    },
};
});

System Info

System:
    OS: macOS 10.15.7
    CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
    Memory: 640.63 MB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 14.17.6 - /usr/local/bin/node
    Yarn: 1.17.0 - /usr/local/bin/yarn
    npm: 6.14.15 - /usr/local/bin/npm
  Browsers:
    Chrome: 94.0.4606.71
    Firefox: 92.0
    Safari: 14.0.3
  npmPackages:
    @vitejs/plugin-react-refresh: ^1.3.6 => 1.3.6 
    vite: ^2.5.6 => 2.5.10

Used Package Manager

npm

Logs

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/vue-next instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[pretender91]

dots in url breaks dev server. Had same problem

[vovchisko]

In addition:

• localhost:8080/some.route.dots browser returns 404.
• localhost:8080/some.route.dots/settings works.

[sapphi-red]

duplicate of #2415