With Android 5.0 Lollipop's release, the recents view (multitask button) became overview, and instead of showing you only actually running apps, it also shows you apps that have ran in the past....
Automatically mount and dismount USB sticks on various devices like the Galaxy Nexus, Nexus 7 and Nexus 10. The Nexus 4 is not supported - this is an issue with the device, not with StickMount !...