diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index a36ddd958..fa07656e2 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -1042,6 +1042,10 @@ Region Layer::latchBuffer(bool& recomputeVisibleRegions)
     if (android_atomic_acquire_cas(true, false, &mSidebandStreamChanged) == 0) {
         // mSidebandStreamChanged was true
         mSidebandStream = mSurfaceFlingerConsumer->getSidebandStream();
+        recomputeVisibleRegions = true;
+
+        const State& s(getDrawingState());
+        return s.transform.transform(Region(Rect(s.active.w, s.active.h)));
     }
 
     Region outDirtyRegion;