Some css styling will break for all previous builds after pushing(with now.sh)

[yassinebridi]

Bug report

Describe the bug

Some css styles stops working for all builds(now.sh), this behavior only occurs when i push a new production build, and weirdly only after midnite(never had this problem when pushing during the day)

Expected behavior

For the styles to work properly at all times.

Screenshots

This build https://frontend-2xb1cn2wa.now.sh/ , looks like this at the time of writing this(00:56 AM UTC+1):
https://storage.googleapis.com/openscreenshot/S/X/H/Hk0UayHXS.png
but after some hours, without pushing any code. it will look normal like this:
https://storage.googleapis.com/openscreenshot/H/7/r/SJ5h0Jr7H.png
(after an hour or so i would expect it to behave normally, as it happened quite sometimes)

System information

• Browser: chrome, 76.0.3809.87
• Version of Next.js: 9.0.2

Additional context

Important notes:
1- When this behavior occurs, all the previous builds will have the same issue.
2- I ran this from a private window, to make sure there would be no caching problem.

config files:
-package.json: https://gist.github.com/yassinebridi/a9e2b15a033b4ccd6464622915b70b94
-next.config: https://gist.github.com/yassinebridi/94325a3a919acbde8161611b1b261c78

I honestly don't know if this is debuggable, but i had to let you know

[developit]

Can you also post your .babelrc / babel.config.js?

[yassinebridi]

i have only one preset in .babelrc

{
  "presets": ["next/babel"]
}

[Timer]

Closing as fixed by #8626

[balazsorban44]

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