We have a list with more than 20,000 items and the items are divided into folders such as no folder has more than 4000 items. The list works fine on it own. We need to move some of the items using "Content and Structure" but when we go to the Content an Structure, we can see all the folders but it doesn't allow us to click within folder and see items. The folder looks static and does not respond to clicks.
This list was working fine till last week. There is a warning at top of the list in Content and Structure, which says "Large list context detected. Custom Views and reports may fail for this list." This warning has been there since the list crossed 5000 items and it didn't affect us in moving items but now we are not able to go within folders in "Content and Structure" to move items within them.