Steps to reproduce:

0. On an Android device, close all applications, and (for recent versions of Android) enable "3-button navigation" under "System navigation" in the settings.
1. flutter create dummy_splash
2. cd dummy_splash
3. flutter run onto the Android device
4. Double-tap the square button that switches applications.

Expected results (seen with v1.0.0): the application shrinks then expands, as it flows smoothly into and out of the recent applications list.

Actual results (seen with v1.13.6-pre.38 on multiple devices): the application flickers briefly when it reexpands from the recent applications list.

cc @matthew-carroll @xster