“Update” button

I’m trying to upload a post, but the “Update” button is missing.
This doesn’t happen with all posts—only a few are affected.
Could you please explain why the “Update” button disappears for some posts and how to fix it?

Please refer to the attached image.
I still haven’t been able to upload the post.

post title: 여성탈모치료 효과 높이는 5가지 최신 비결

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