Apologies if I have missed the feature but when you have open the dialogue for past flight logs and selected an entry, when you want to move to the next or previous flight, you have to close that window, select the logs again and wait for it to load the log entries before selecting the entry you wish to move.

Thanks for giving that extra information. This is the right forum to suggest such things, as when other people weigh in with their thoughts it helps us decide which things to give priority to.