editing in preview mode

Is it normal that quick edit is impossible in preview mode? fields like paste and cut remain grey but sellect all and copy are ok.  thanks in advance

It sounds like you have another EndNote record window open in the background - which prevents editing in the Quick Edit pane in the main EndNote Library window. This by design to try to avoid accidentally editing the same thing from two different windows/views. If you close any open record windows, you will be able to edit directly in the Quick Edit pane in the main library.

Jason Rollins, the EndNote team

i can’t configure the problem. I see one process of end note running . How to identify in other way?