Skype showing me as online - after stopping app and even after device shutdown?

**Scenario A:** 1. start Skype 2. do some other work 3. shut down the Android device **Problem:** My contacts are still seeing me as being "online". Strangely enough there seems to be no heartbeat feature implemented in Skype. So even after 1 day my contacts are trying to call me - even though the device is powered off. Initially I thought this symptom would occur in case i forgot to manually quit the Skype app before shutting down the device. So i was searching for an answer how to configure Skype to *automatically* log off / quit when the Android device is *shutting down*? But now it turned out the situation is even worse: ***Scenario B:*** 1. start Skype 2. do some other work 3. quit the Skype app 4. shut down the Android device After step 3 I'm still listed as being "online". When a contact sends me a chat message it pops up. So it means: even though Skype no longer appears in the task manager it seems to be running as a secret, invisible background task!? And after step 4 the behaviour is the same as in Scenario A. I'm not transitioning to "offline" state. **Summary:** There seem to be 3 problems: - no heartbeat feature implemented in Skype - quitting the Skype app is not properly terminating / signing off - shutting down the Android device also is not influencing the online status **The only thing that works for me so far: You must switch to Skype, tap on your profile, at the very bottom *manually* do "sign out".** That's just not bearable. This is: **Android 4.1.2** **Skype 4.9.0.45564** **Skype 5.0.0.49715** **Skype 5.1.0.56619** **Skype 5.1.0.58677** **Skype 5.4.0.5871** (at least I'm now showing as being "Away" - instead of "Online") 2015-08-15 - the problem is back and it's even worse: **Android 5.1.1** **Skype 5.9.0.14047** Even though I'm manually signing out, terminating the app and shutting down the Android device I'm still being shown as being "online"!! -- All of the above tested @ Samsung Galaxy Tab 2 7.0 (WiFi only) / GT-P3110