I am on a PC using Windows 7 and it seems like the problem started happening when I updated to the most current version of LR5. I have tried removing all of the folders and reimporting them and still have an issue with the bottom 20% not being clickable.
When you remove a folder or file and then reimport them the LR catalog erases all work done to the file. As far as LR is concerned they are new files that have never been processed inside LR! Please check the files in the folders that were removed and reimported to see if their editing and keywording is still showing.
There is a Windows bug that crops up when there are 1600 items in a list (I think 1600 is the number), and you would be wise to turn your folders into hierarchies somehow, so you can collapse part of the hierarchies and then fewer than 1600 items will be in the list.
Paige Miller wrote:
There is a Windows bug that crops up when there are 1600 items in a list (I think 1600 is the number),
It's not actually a bug. It's a design limitation on the Windows platform (one that should have been addressed a long time back). The same issue effects collections, Keywords, etc. As you mention, using a hierarchical structure is the only viable option.