ae5517e9a4
The logic in ag/5108931 was intended to suppress the next return animation if it would cross a task boundary, while preserving return animations in all other cases. However, it accidentally caused excessive suppressions in the case of repeated back button presses. The reason is that although the sending activity is indeed only topOfTask when moving forward cross-task, it's *always* topOfTask when pressing back, so the state of the sending activity doesn't contain sufficient information to feed this logic. This patch changes to suppress when the receiving activity is task root, which is a more direct and reliable signal. (By definition, the return transition from an activity will cross a task boundary if and only if it's the task root.) Fixes: 177780499 Test: New test in ag/13593522 Change-Id: Ia5751da6122dc1ddb557f45318712185fa0b3df9