![IE11 no longer works when upgrading react-scripts from 3.4.3 to 4.0.1 (react-scripts 4.0.1 is not compatible with react-app-polyfill 1.0.6 or 2.0.0) · Issue #10258 · facebook/create-react-app · GitHub IE11 no longer works when upgrading react-scripts from 3.4.3 to 4.0.1 (react-scripts 4.0.1 is not compatible with react-app-polyfill 1.0.6 or 2.0.0) · Issue #10258 · facebook/create-react-app · GitHub](https://user-images.githubusercontent.com/9248719/102490709-1c90e880-4067-11eb-8906-eaf9ee80fbed.png)
IE11 no longer works when upgrading react-scripts from 3.4.3 to 4.0.1 (react-scripts 4.0.1 is not compatible with react-app-polyfill 1.0.6 or 2.0.0) · Issue #10258 · facebook/create-react-app · GitHub
In IE11, media queries in style tags with data-senna-track attributes are applied as though the page has a width of 0px · Issue #301 · liferay/senna. js · GitHub
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Error on IE 11: Object doesn't support property or method 'slice' · Issue #277 · Hopding/pdf-lib · GitHub
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IE 11 crash related to symbols in combination with core-js/stable and @babel/runtime-corejs3 · Issue #736 · zloirock/core-js · GitHub
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Cannot redefine non-configurable property 'values' on <= IE11 · Issue #123 · JakeChampion/polyfill-library · GitHub
![angular - Object doesn't support property or method 'assign' - ie11 while using angular4 - Stack Overflow angular - Object doesn't support property or method 'assign' - ie11 while using angular4 - Stack Overflow](https://i.stack.imgur.com/KVAie.png)
angular - Object doesn't support property or method 'assign' - ie11 while using angular4 - Stack Overflow
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javascript - classList.replace() is not a method or property in IE11 after using babel-polyfill - Stack Overflow
![IE11 no longer works when upgrading react-scripts from 3.4.3 to 4.0.1 (react-scripts 4.0.1 is not compatible with react-app-polyfill 1.0.6 or 2.0.0) · Issue #10258 · facebook/create-react-app · GitHub IE11 no longer works when upgrading react-scripts from 3.4.3 to 4.0.1 (react-scripts 4.0.1 is not compatible with react-app-polyfill 1.0.6 or 2.0.0) · Issue #10258 · facebook/create-react-app · GitHub](https://user-images.githubusercontent.com/9248719/102526642-def68480-4093-11eb-8485-f319490b0c40.png)