This is somewhat a follow up to my 1,5 year old question (still not answered).
I already know that applications displayed as disabled may still be running in background in certain scenarios (mostly, when Google says they must run). But is it a normal situation that such disabled application is modifying / interfering with the system or user interface?
I have Duo (another Google monster) disabled in my device:
Yet it clearly interfere with my system / user experience and it adds some new items to my contacts:
Is this a normal situation. And if so -- then what is "disabling an application" really mean? It seems to be a total fake, making Android users a pure idiots.