Why does the backlight of a PCD7.D23x not work correctly in BUS Mode?

Problem
The Display PCD7.D23x is configured in BUS mode the backlight is always of on the first page.

Reason

This is a bug in the HMI-Library

Solution

The problem will be corrected in PG5 1.4 if a urgent bugfix is needed please contact the Support-Team. They can send you a corrected library for PG5 1.3.