I've been playing a lot with Book & Quill since it came to Minecraft in Better Together.
But there's something that really makes me angry, when I open it, I break the block I was pointing (only blocks that break instantly).
But I noticed something: the first time you open it, works properly. After that, everytime you open the book it breaks the block.
I'm sure it only happens in touch devices.
It shouldn't be that hard to fix, snowballs, ender pearls and potions don't break the block...
I use a Samsung Galaxy J5 2016
(I'm trying my best to spell correctly)