If it happens again, open a terminal and do "ps aux > processes.txt" and upload that file, or see for yourself if the program that still has the arrow is running is in the output of that command. Maybe the programs are not closing completely?
If it happens again, open a terminal and do "ps aux > processes.txt" and upload that file, or see for yourself if the program that still has the arrow is running is in the output of that command. Maybe the programs are not closing completely?