Yes, I can confirm this bug as well.
It happens for me in my game, not using the plugin demo.
Both Samsung S6 (Android 6.0.1) and Samsung S3(Android 4.1.2) crash.
It does not crash if app is running in backgronud(so no need to start the app just bring from background).
It crashes when app was not running at all, the moment you click the notification, it crashes.
Update from me, maybe can help.
I did much more testing using my devices and newest versions of Felgo (2.9.2) and Felgo plugins app which is now in the Google Play.
This bug is consistent and can replicate it 100% on my my devices and using old(Felgo plugin) and newest Felgo libraries.