Multiple Apple Pencil bugs
The app constantly changes writings into squares and circles, especially when writing letters “o”, “a” etc.
The button that is supposed to cancel the last change actually returns to a random spot in the previously written spots but almost never it cancels the actual last action. A single tap can also delete the whole handwritten sentence (and a random one) instead of deleting just one last line or letter.
The eraser works in a way that you need to tap it multiple times at something you want to delete. It’ll flash that part but won’t delete it instantly.
Eraser deletes (if deletes at all) bigger part than it’s supposed to do. It just randomly embraces some other part of handwriting that is close to the one you are applying to