diff --git a/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java b/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
index f420619db4907..5d0fefc75a28d 100644
--- a/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
+++ b/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
@@ -249,6 +249,7 @@ class BroadcastQueueModernImpl extends BroadcastQueue {
     private static final int MSG_CHECK_HEALTH = 5;
     private static final int MSG_CHECK_PENDING_COLD_START_VALIDITY = 6;
     private static final int MSG_PROCESS_FREEZABLE_CHANGED = 7;
+    private static final int MSG_UID_STATE_CHANGED = 8;
 
     private void enqueueUpdateRunningList() {
         mLocalHandler.removeMessages(MSG_UPDATE_RUNNING_LIST);
@@ -295,6 +296,19 @@ class BroadcastQueueModernImpl extends BroadcastQueue {
                 }
                 return true;
             }
+            case MSG_UID_STATE_CHANGED: {
+                final int uid = (int) msg.obj;
+                final int procState = msg.arg1;
+                synchronized (mService) {
+                    if (procState == ActivityManager.PROCESS_STATE_TOP) {
+                        mUidForeground.put(uid, true);
+                    } else {
+                        mUidForeground.delete(uid);
+                    }
+                    refreshProcessQueuesLocked(uid);
+                }
+                return true;
+            }
         }
         return false;
     };
@@ -672,7 +686,7 @@ class BroadcastQueueModernImpl extends BroadcastQueue {
     @Override
     public void onProcessFreezableChangedLocked(@NonNull ProcessRecord app) {
         mLocalHandler.removeMessages(MSG_PROCESS_FREEZABLE_CHANGED, app);
-        mLocalHandler.sendMessage(mHandler.obtainMessage(MSG_PROCESS_FREEZABLE_CHANGED, app));
+        mLocalHandler.obtainMessage(MSG_PROCESS_FREEZABLE_CHANGED, app).sendToTarget();
     }
 
     @Override
@@ -1601,14 +1615,9 @@ class BroadcastQueueModernImpl extends BroadcastQueue {
             @Override
             public void onUidStateChanged(int uid, int procState, long procStateSeq,
                     int capability) {
-                synchronized (mService) {
-                    if (procState == ActivityManager.PROCESS_STATE_TOP) {
-                        mUidForeground.put(uid, true);
-                    } else {
-                        mUidForeground.delete(uid);
-                    }
-                    refreshProcessQueuesLocked(uid);
-                }
+                mLocalHandler.removeMessages(MSG_UID_STATE_CHANGED, uid);
+                mLocalHandler.obtainMessage(MSG_UID_STATE_CHANGED, procState, 0, uid)
+                        .sendToTarget();
             }
         }, ActivityManager.UID_OBSERVER_PROCSTATE,
                 ActivityManager.PROCESS_STATE_TOP, "android");
diff --git a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
index 73eb237fa9e76..72c5333e0a02f 100644
--- a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
+++ b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
@@ -125,6 +125,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.UnaryOperator;
@@ -707,6 +708,9 @@ public class BroadcastQueueTest {
     private void waitForIdle() throws Exception {
         mLooper.release();
         mQueue.waitForIdle(LOG_WRITER_INFO);
+        final CountDownLatch latch = new CountDownLatch(1);
+        mHandlerThread.getThreadHandler().post(latch::countDown);
+        latch.await();
         mLooper = Objects.requireNonNull(InstrumentationRegistry.getInstrumentation()
                 .acquireLooperManager(mHandlerThread.getLooper()));
     }
@@ -2342,6 +2346,7 @@ public class BroadcastQueueTest {
 
         mUidObserver.onUidStateChanged(receiverGreenApp.info.uid,
                 ActivityManager.PROCESS_STATE_TOP, 0, ActivityManager.PROCESS_CAPABILITY_NONE);
+        waitForIdle();
 
         final Intent airplane = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
         final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
@@ -2375,6 +2380,7 @@ public class BroadcastQueueTest {
 
         mUidObserver.onUidStateChanged(receiverGreenApp.info.uid,
                 ActivityManager.PROCESS_STATE_TOP, 0, ActivityManager.PROCESS_CAPABILITY_NONE);
+        waitForIdle();
 
         final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);