Background service killed on App close in LeEco device only

Background service killed on App close in LeEco devices with following error

ActivityThread: SVC-SERVICE_ARGS handled : 0 / ServiceArgsData{token=android.os.BinderProxy@8eeaafc startId=3 args=Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000

1. Open the app
   
2. Go to recent apps by pressing leftmost button
   
3. Swipe down the app which you wanna work in background.
   
4. You will see a lock at the top of that app
   Your services will be running in background forever