Looks fine in the library. Fine in the Navigator thumbnail. It just seems like there's a certain view/filter switched on.
I'm on Windows 7.
CC Lightroom 2015.2.1
It seems that the display adapter drivers are conflicting with the application.
Please follow the below steps:
> Launch Lightroom
> Click on Edit > Preferences
> Click on Performance tab
> Disable Use Graphics Processor
> Restart the machine
> Launch Lightroom and check for the issue
Let me know if this helps.
Worked like a charm. Thank you so much, Mrinmay!
I am glad that I was able to help.
Let us know if you have any further queries.