Bookmarks Sync problem between iPhone and iPad

Hey guys, I have a question about bookmarks sync problem.
I tested something.

  1. I made a bookmark on the Mac version. In this case, the function is wonderful.
    the bookmark is automatically synchronized across Mac, iPad, and iPhone

  2. I made a bookmark on the iPhone. Bookmarks are not being created on both Mac and iPad.

  3. I made a bookmark on the iPad. Bookmarks are not being created on both Mac and iPhone.

Am I the only one experiencing this issue?

I think when I create bookmarks on my iPhone and iPad, the information is not being transmitted to iCloud.

Can you check this issue?

It seems to be the same in MN4. Bookmarks apparently do not get synced consistently