This conversation has been merged. Please reference the main conversation: Lightroom 2015.7+: Panels and filmstrip black when switching to Develop
Sometimes the interface can be restored by minimising the window or resizing it. Generally I have to close Lightroom to restore the interface to being usable.
I've only noticed this problem after the latest 2015.9 update.
Lightroom version: CC 2015.9 [ 1106920 ]
License: Creative Cloud
Operating system: Mac OS 10
Version: 10.12 
Application architecture: x64
Logical processor count: 8
Processor speed: 2.2 GHz
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 3,369.0 MB (20.5%)
Virtual memory used by Lightroom: 7,297.3 MB
Memory cache size: 3,622.8MB / 3,864.7MB (93.7%)
Maximum thread count used by Camera Raw: 8
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 714MB / 8191MB (8%)
Displays: 1) 2880x1800
Graphics Processor Info:
Intel Iris Pro OpenGL Engine
Check OpenGL support: Passed
Vendor: Intel Inc.
Version: 4.1 INTEL-10.22.29
Renderer: Intel Iris Pro OpenGL Engine
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