I swear that Lightroom 5/6 have a render bug that affects older images. I can’t pin point it to any specific editing steps, but when it happens, there’s a huge difference in rendering between the Library and the Develop module.
Images that I edited in Lightroom 4 (Process 2012) are rendered totally out of whack in Lightroom 5 and 6 when I switch to the Develop module. The Library module most likely has an “old” preview rendered at this point, from back when I was using Lightroom 4, so it looks correct. But once I switch to Develop, LR renders the image anew, and it’s totally messed up.
Here’s another one – photo from 2011, and this one is in Process 2010. There’s a stack of three layered graduated filters at the top, very selectively adjusting the sky. I think this one might have to do with the Clarity feature, I’m not sure. I haven’t touched this photo in 5 years – and this is how Lightroom 6 renders it now (and NO, I did not make it that dark originally!;-).
Since I don’t have any ages old Lightroom versions around to reproduce this, any hint about what’s going on here would be appreciated. Just drop me a note in the comments – thanks.