I installed the latest version of LR Classic and unfortunately I encountered problems when using the "previous" button as it changes the cropping as well, while I did not ask for it. Very annoying. Two older problems were:
1 The display does not scale properly when shifting from a 4K to a HD-screen. Surprisingly, photoshop and the creative cloud desktop work OK.
2 The display becomes sometimes unsharp when switching to full screen Adobe promised to improve the second error in a major update, but it is not in the 10.2 version.
Now I seem to have three major problems, so for now I went back to 10.1.1.