There's 2 autoFocus in LoginForm, caused the react-admin app can not be rendered on IE11.

[keeneagle]

When loading the page on IE, the page is blank, and there's an error in the console:
SCRIPT1046: Multiple definitions of a property not allowed in strict mode
admin-client.615b4d0f.js (111,384536)

Here's the built source code for reference:
react__WEBPACK_IMPORTED_MODULE_0___default.a.createElement(redux_form__WEBPACK_IMPORTED_MODULE_2_["Field"], { autoFocus: true, id: "username", name: "username", component: renderInput, label: translate('ra.auth.username'), disabled: isLoading, autoFocus: true })),_