Open nicholaschiang opened 3 years ago
I have same problem. my nextjs version is 9.5.5 and react version is 16.8.6.
I have done this with _documet.js like bellow " import Document, { Html, Head, Main, NextScript } from 'next/document';
exports.PERMANENT_REDIRECT_STATUS = 301;
class MyDocument extends Document {
componentDidMount() {
if (typeof window !== "undefined") {
window.onload = () => {
document.getElementById("flashStyle").remove();
};
}
}
render() {
return (
<Html lang="en">
<Head />
<body>
<script>0</script>
<Main />
<NextScript />
</body>
</Html>
);
}
}
export default MyDocument;
"
Had the same problem and did a bit more investigating. This started happening after I upgraded to the latest Next (10.0.6) from Next 9.9.4 . Even after downgrading, however, the problem stayed.
Eventually, I went to compare the lock files between the working and not working version, and found that the non-working version installed the following version of styled-jsx in addition to the 3.3.0 I already had in yarn.lock
styled-jsx@^3.2.5:
version "3.4.2"
Once I downgraded next and fixed styled jsx to version 3.3.0 the FOUC disappeared.
I'm using next 10.0.6 and styled-jsx 3.3.2: if I upgrade to the latest 3.4.x I have FOUC issue too on production build.
With the latest 3.4.4 version always FOUC issue... I don't know if it could help but we're using the SASS plugin too and we have the global style on a Layout common component on each page
Do you want to request a feature or report a bug?
I wish to report a bug.
What is the current behavior?
When I used
styled-jsx
with Next.js 10 and React 17, there seems to be an unavoidable FOUC when visiting my portfolio website for the first time:It seems to be working fine with Next.js 9 and React 16. It's also definitely a bug with
styled-jsx
as those same styles were able to be loaded using SCSS modules in my TB project.See this issue for more info.
If the current behavior is a bug, please provide the steps to reproduce and possibly a minimal demo or testcase in the form of a Next.js app, CodeSandbox URL or similar
Steps to reproduce the behavior, please provide code snippets or a repository:
Or, if you want to reproduce locally:
yarn dev
oryarn build && yarn start
What is the expected behavior?
There should be no FOUC.
Environment (include versions)
Did this work in previous versions?
Yes, it worked fine with previous version of Next.js and React.