Falling lectern with book has an invisible book until it lands

This command will create a falling block entity representing a lectern with a book in it:

/summon falling_block ~ ~5 ~5 {Time:1,BlockState:{Name:"minecraft:lectern",Properties:{"has_book":"true"}}}

If you run this command, the entity will not have a book displayed on it, which is wrong. The book only becomes visible once the entity hits the ground.

The expected outcome would be for the book to be visible even before the lectern touches a block and itself becomes a placed block.