Been experiencing this since 3.6 came out:
On my iPhone 5 running iOS 9.2, I go to the D-Link Lite app and turn on notifications for both my motion detecting cameras: DCS-930L and DCS-5010L. I'll randomly call the 930L camera #1, and the 5010L camera #2 but the bug happens no matter which camera sends the notification via the app.
When motion is detected on camera 1, I get the notification on my iPhone home screen. I swipe the notification with my finger, and it automatically opens camera 1's video feed in the D-Link Lite app.
Then, when I try to hit the 'back' button to look at camera 2, the app automatically slides back to the live video feed of camera 1 (or which ever camera detected motion first). It completely takes over the app. I must kill the app, then re-launch it before I can view video feeds of both cameras.
Thank you for your attention.