For those who occasionally want to appear offline for whatever reason. Well, it seems like if you are decide to use the app while playing, you immediately go “online”.
Like, how is this a thing?
Edit - Unless I’ve been living under a rock for the past few days, they finally added a way to change your online status in game. The issue is that if it differs from the PC or mobile Battle.net app, it will automatically change your status to online. I guess these are teething issues that need fixing.