The are times when you have 6 plus tabs open and you are doing file I/O in one of those tabs eg
write('..\file.txt'). After running the program you'd want to view the contents of the file through the 'open selected filename' option. But after closing the file, focus will be taken to the second last file, 5 tabs away. I think that there should be a 'tab history' at least for the order of the last three or two closed tabs.