Activity stack ordering problem when launching application from Android app installer and from Home screen

Question

For testing purposes only, I am allowing my app APK to be downloaded and installed via a URL. Once downloaded on the phone, it can be launched with the Android app installer

Answer 1

Your problem is likely rooted in the fact that App installer doesn't use the LAUNCHER category, as does the launcher.

This bug has been documented elsewhere:

App always starts fresh from root activity instead of resuming background state (Known Bug)