[BUG?] Random preview failure on MD files

[Merci-chao]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Pages

Body

I have an MD file uploaded to my repository:
https://github.com/Merci-chao/userChrome.js/blob/main/README.jp.md (the left part in the screenshot)

One day, GitHub suddenly started failing to preview the file in webpage style whenever I committed some changes. Sometimes it would return to normal after a few minutes, but most of the time it kept displaying the raw code. Currently, it is displaying normally.

I tried creating an exact copy in a test repository, but the file still cannot be previewed:
https://github.com/Merci-chao/test/blob/main/README.jp.md (the right part in the screenshot)

How can I fix this?

Edit: The page was previewed correctly 4 hours later.

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