diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImpl.java
index e1ddbd23e51af..760e4a9ef595e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImpl.java
@@ -18,6 +18,7 @@ package com.android.systemui.statusbar.notification.interruption;
 
 import static com.android.systemui.statusbar.StatusBarState.SHADE;
 
+import android.app.Notification;
 import android.app.NotificationManager;
 import android.content.ContentResolver;
 import android.database.ContentObserver;
@@ -204,6 +205,17 @@ public class NotificationInterruptStateProviderImpl implements NotificationInter
             return false;
         }
 
+        // If the notification has suppressive BubbleMetadata, block FSI and warn.
+        Notification.BubbleMetadata bubbleMetadata = sbn.getNotification().getBubbleMetadata();
+        if (bubbleMetadata != null && bubbleMetadata.isNotificationSuppressed()) {
+            // b/274759612: Detect and report an event when a notification has both an FSI and a
+            // suppressive BubbleMetadata, and now correctly block the FSI from firing.
+            final int uid = entry.getSbn().getUid();
+            android.util.EventLog.writeEvent(0x534e4554, "274759612", uid, "bubbleMetadata");
+            mLogger.logNoFullscreenWarning(entry, "BubbleMetadata may prevent HUN");
+            return false;
+        }
+
         // If the screen is off, then launch the FullScreenIntent
         if (!mPowerManager.isInteractive()) {
             mLogger.logFullscreen(entry, "Device is not interactive");
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImplTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImplTest.java
index 25add0da4e71b..3bdf5894fc06f 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImplTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/interruption/NotificationInterruptStateProviderImplTest.java
@@ -468,9 +468,30 @@ public class NotificationInterruptStateProviderImplTest extends SysuiTestCase {
         verify(mLogger, never()).logFullscreen(any(), any());
     }
 
+
+    @Test
+    public void testShouldNotFullScreen_isSuppressedByBubbleMetadata() throws RemoteException {
+        NotificationEntry entry = createFsiNotification(IMPORTANCE_HIGH, /* silenced */ false);
+        Notification.BubbleMetadata bubbleMetadata = new Notification.BubbleMetadata.Builder("foo")
+                .setSuppressNotification(true).build();
+        entry.getSbn().getNotification().setBubbleMetadata(bubbleMetadata);
+        when(mPowerManager.isInteractive()).thenReturn(false);
+        when(mDreamManager.isDreaming()).thenReturn(true);
+        when(mStatusBarStateController.getState()).thenReturn(KEYGUARD);
+
+        assertThat(mNotifInterruptionStateProvider.shouldLaunchFullScreenIntentWhenAdded(entry))
+                .isFalse();
+        verify(mLogger, never()).logNoFullscreen(any(), any());
+        verify(mLogger).logNoFullscreenWarning(entry, "GroupAlertBehavior will prevent HUN");
+        verify(mLogger, never()).logFullscreen(any(), any());
+    }
+
     @Test
     public void testShouldFullScreen_notInteractive() throws RemoteException {
         NotificationEntry entry = createFsiNotification(IMPORTANCE_HIGH, /* silenced */ false);
+        Notification.BubbleMetadata bubbleMetadata = new Notification.BubbleMetadata.Builder("foo")
+                .setSuppressNotification(false).build();
+        entry.getSbn().getNotification().setBubbleMetadata(bubbleMetadata);
         when(mPowerManager.isInteractive()).thenReturn(false);
         when(mDreamManager.isDreaming()).thenReturn(false);
         when(mStatusBarStateController.getState()).thenReturn(SHADE);