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Bug Report Sept. 25 2019 update


New Member
Aug 9, 2015
Lightroom Experience
Lightroom Version
Lightroom Classic v 8.4.1
Operating System
Windows 10
I posted this bug report this morning Sept 26.
"Switching from library or map modules to develop module results in a black screen.
Switching back is normal.
The only way to edit is to shut down the application and restart.
I am using Windows 10 Pro Build 17763.737. This bug came with the update installed 2019-09-25. "
Posting here just as a heads up.

Jul 2, 2015
Lightroom Experience
Power User
Lightroom Version
If that was really a bug in Lightroom, complaints would be all over the place. More likely it is a problem with your graphics card. Make sure you have the latest version of the grapics card drivers. And try to disable the GPU acceleration in Lightroom: Go to preferences - performance and turn it off.


Senior Member
Jan 9, 2011
Green Valley, Arizona, USA
Lightroom Experience
Lightroom Version
I cannot reproduce what you experience.
But I am using the latest Win 10 Pro build : 10.0.18362

Try updating to the latest one.