@Aravisian ,Thanks! 
@Luca_Pavan , "Show running apps", yep, i already have that on.
I notice that my telegram app is showing up in my System Monitor.
But i for the first time looked at its properties, and it says sleeping, i never knew i could see this or that could happen. What does sleeping mean though? When in sleep mode, does the program ever ping/phone home to its servers?