When a part of the table is empty, when saved and displayed again, it shows " " where it should be empty

[prefect-song]

Using this project, I created a table where I only want to fill in some of the content. The rest of the content has not been determined yet, so I just want it to be empty.

However, when I saved it and opened the page again, the table that should have been empty was displayed as&nbs; Is this a bug? Do you have a solution