"Bookmarks are being synced..." message in Safari What causes the iPad to show


  Bookmarks are being synced. Please add the bookmarks once syncing has completed


when attempting to add a bookmark or favorite in Safari and how can it be prevented?
Your iPad or any iOS/macOS device logged into an iCloud with Safari sharing in Settings -&gt; iCloud -&gt; Safari will sync history, bookmarks, and logins. Any changes to the bookmarks will trigger the sync, forcing you to wait. Its a pain in the arse to manage bookmarks with this always popping up.

Disable the syncing in your iCloud settings under Safari.