description of issue:

sometimes when writing in a book and quill, i will attempt to sign the book and quill only for me to click the button and it not to not do anything. i tried rewriting it and it worked but i don't understand what's going on. i have attached a video showing the issue

what should happen:

when clicking "sign and close" it should sign a book and close it.

what happens:

the book will randomly decide to not sign and close requiring a rewrite.

steps to recreate:

1. load a world and obtain a book and quill (i was using creative on a flat world)
2. write something such as a a short story
3. attempt to sign it. leave the author blank (i tried with a author and it didn't work)

additional

if this issue is because of some sort of requirement i have not fulfilled i would like to say it is not very clear and hopefully this feedback can be sent to the appropriate team to help make it more clear.

thank you for your time.