diff --git a/dev/Materials/Acrylic/AcrylicBrush.cpp b/dev/Materials/Acrylic/AcrylicBrush.cpp
index fb43e8d386..85817207bc 100644
--- a/dev/Materials/Acrylic/AcrylicBrush.cpp
+++ b/dev/Materials/Acrylic/AcrylicBrush.cpp
@@ -607,6 +607,13 @@ winrt::CompositionEffectBrush AcrylicBrush::CreateAcrylicBrushWorker(
         }
     }
 
+#ifndef BUILD_WINDOWS
+    if (acrylicBrush)
+    {
+        acrylicBrush.Properties().InsertScalar(L"ShouldRenderAsFallbackInIslands", 1.0f);
+    }
+#endif
+
     return acrylicBrush;
 }
 
diff --git a/dev/Materials/Reveal/RevealBrush.cpp b/dev/Materials/Reveal/RevealBrush.cpp
index 59147672c1..780d0a26ff 100644
--- a/dev/Materials/Reveal/RevealBrush.cpp
+++ b/dev/Materials/Reveal/RevealBrush.cpp
@@ -699,6 +699,13 @@ void RevealBrush::CreateRevealBrush()
             m_brush = compositor.CreateColorBrush(fallbackColor);
         }
     }
+
+#ifndef BUILD_WINDOWS
+    if (m_brush)
+    {
+        m_brush.Properties().InsertScalar(L"ShouldRenderAsFallbackInIslands", 1.0f);
+    }
+#endif
 }
 
 void RevealBrush::UpdateRevealBrush()