closes#4789 this time for real, hopefully, maybe
also set `alwaysRetainTaskState` for good measure
> `android:alwaysRetainTaskState`
Whether the state of the task that the activity is in is always
maintained by the system. `"true"` if it is, and `"false"` if the system
can reset the task to its initial state in certain situations. The
default value is `"false"`. This attribute is meaningful only for the
root activity of a task. It's ignored for all other activities.
> Normally, the system clears a task, removing all activities from the
stack above the root activity, in certain situations when the user
re-selects that task from the home screen. Typically, this is done if
the user hasn't visited the task for a certain amount of time, such as
30 minutes.
> However, when this attribute is `"true"`, users always return to the
task in its last state, regardless of how they get there. This is useful
in an application like a web browser where there is a lot of state, such
as multiple open tabs, that users don't want to lose.
https://developer.android.com/guide/topics/manifest/activity-element#always
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