Custom domain resolved well, but refuse to show any new updates.

Disable custom domain, everything works fine. Any updates or posts show immediately on the page.

Enable custom domain, the main page roll back to days ago, and any new updates are not there even if I force reload page several times. Also, applying a theme does not change the main page neither.

However, if I browse to archive, I could see those new updates/posts. I can also click them to bring the details up. Just the main page standing still. Looks like the custom domain suddenly gives tumblr an extremely lazy cache...