PC in stand by

When I put the pc in hibernation or stand by and have fm open, upon reactivation after 2 or 4 or so many hours I find football manager closed. Why?
Thanks in advance for the help.

Fulvio

@william shane  great answer

@Flavio Carrera  will move to general forum as this forum states- This Forum is just for reporting issues with the site and membership matters-All other matters use the appropriate Forum. Please be aware any post deemed inappropriate will be removed/edited at the discretion of staff

cheers