Opt In event still sent when "trackAutomaticEvents" is set to false

[brandenfung2]

We are obtaining the MixpanelAPI instance using the following call:

 MixpanelAPI.getInstance(applicationContext, getToken(), false)

where trackAutomaticEvents is set to false

However we are still seeing automatic events being sent to our console, specifically we are still seeing the $opt_in event.

Upon further investigation in the Mixpanel Android SDK, it appears that MixpanelAPI.optInTracking() will send this event no matter the trackAutomaticEvents flag via this line:

mixpanel-android/src/main/java/com/mixpanel/android/mpmetrics/MixpanelAPI.java

Line 1239 in f40e1f7

track("$opt_in", properties);

Is there a reason why the opt_in event is not classified as an automatic event? This seems like a bug to me.