I do also have a problem with syncing on my EN app on iOS. The note is accessible on web or Mac, but not on iPhone or iPad. It is also accessible and normally seen when sent by email.
On iPad the pictures and text is seen in the preview on the left side, but on the right side (where the body of the text you anticipate) there is only the name of the note and then start writing in the window.
I deleted the app, cleared the cache, the note was not changed recently and this is the only note with this problem.
Thank you for helping. If you need additional information, please let me know.