Merge "Searching and resuming the visible child Tasks behind invisible one" into tm-qpr-dev am: 3b378dfe3f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20674699

Change-Id: I596995f82d045e4b5e4350b4a85e0fe12d89753e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

services/core/java/com/android/server/wm/Task.java

@@ -4921,6 +4921,11 @@ class Task extends TaskFragment {
                     }
                     if (child.getVisibility(null /* starting */)
                             != TASK_FRAGMENT_VISIBILITY_VISIBLE) {
+                        if (child.topRunningActivity() == null) {
+                            // Skip the task if no running activity and continue resuming next task.
+                            continue;
+                        }
+                        // Otherwise, assuming everything behind this task should also be invisible.
                         break;
                     }