onActivityResult do not fire if launch mode of activity is singleInstance

Question

I have an Activity which is basically my main activity and its launch mode is single instance. But because of singleInstance, the onActivityResult() callback do

Answer 1

A "singleInstance" activity, permits no other activities to be part of its task. It's the only activity in the task. If it starts another activity, that activity is assigned to a different task. The activity is always the single and only member of its task.
I think onActivityResult will not work with singleInstance