P: Add a Horizontal scroll bar in the Book Modulewhen enlarging a page 1:1 or 4:1 (Windows)

BTW: due to another issue in the Develop Module I switched from German to English.

I'm using the same resolution, screen size, Hardware etc. as with LR 5.

Here the settings:
Monitor: Dell U2713HM (27 inch) at 2560 x 1440

Lightroom version: CC 2015.0.1 [ 1018573 ]
License: Trial
Operating system: Windows 8.1 Home Premium Edition
Version: 6.3 [9600]
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 2,3 GHz
Built-in memory: 8052,0 MB
Real memory available to Lightroom: 8052,0 MB
Real memory used by Lightroom: 1306,4 MB (16,2%)
Virtual memory used by Lightroom: 1398,9 MB
Memory cache size: 0,0 MB
Maximum thread count used by Camera Raw: 4
Camera Raw SIMD optimization: SSE2,AVX
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 2560x1440
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:
GeForce GT 650M/PCIe/SSE2

Check OpenGL support: Passed
Vendor: NVIDIA Corporation
Version: 3.3.0 NVIDIA 344.75
Renderer: GeForce GT 650M/PCIe/SSE2
LanguageVersion: 3.30 NVIDIA via Cg compiler

I get a horizontal scroll bar in both 1:1 and 4:1.

Can you share some specifications of your system - Screen size? Resolution?