The new Lightroom, after disabling the shortcut X is now causing rendering errors on the latest MacPro !
On some images, the rendering is washed out and flickers between right and wrong when the mouse cursors goes over the bottom toolbar.
Disabling the gc solves the problem...
Working with LR is an absolute nightmare right now.
Please update Lightroom to the latest version 2015.9/6.9 which in includes the fix for Lightroom CC 2015.8: Shortcut X to reject an image in Library not available (French) | Photoshop Family Customer Communi…