If the last line of the Apple Book App cannot be displayed or read normally during reading, it is usually caused by a bug in the application itself or a system failure. First of all, trying to update the Apple Book app to the latest version can correct many known problems. At the same time, keep the device operating system version updated to the latest version to be compatible with application updates.
In the process of equipment maintenance and use, it is recommended to update the application and operating system regularly to ensure the timely upgrade, security update and compatibility of the software.