Battlenet app sometimes makes every game drop to desktop

It pisses me off, every now and then the battlenet randomly asks for permission to do something out of nowhere and in the processs drop everything to desktop. So when I play some other game it’s extremely annoying.
How can I disable these random ask for permision stuff? Or at least to patiently wait for me until I decide to check the app and not force me to desktop.

Disable automatic updates under Downloads in the settings menu.