diff --git a/components/style/properties/longhand/ui.mako.rs b/components/style/properties/longhand/ui.mako.rs
index 5f2215760f8..cddc689e6a6 100644
--- a/components/style/properties/longhand/ui.mako.rs
+++ b/components/style/properties/longhand/ui.mako.rs
@@ -41,19 +41,20 @@ ${helpers.single_keyword("-moz-window-shadow", "none default menu tooltip sheet"
                          enabled_in="chrome",
                          spec="None (Nonstandard internal property)")}
 
+// TODO(bug 1419695) This should be hidden from content.
 ${helpers.predefined_type("-moz-window-opacity", "Opacity", "1.0", products="gecko",
                           gecko_ffi_name="mWindowOpacity",
                           animation_value_type="ComputedValue",
-                          enabled_in="chrome",
                           spec="None (Nonstandard internal property)")}
 
+// TODO(bug 1419695) This should be hidden from content.
 ${helpers.predefined_type("-moz-window-transform", "Transform",
                           "generics::transform::Transform::none()",
                           products="gecko", gecko_ffi_name="mSpecifiedWindowTransform",
                           animation_value_type="ComputedValue",
-                          enabled_in="chrome",
                           spec="None (Nonstandard internal property)")}
 
+// TODO(bug 1419695) This should be hidden from content.
 ${helpers.predefined_type("-moz-window-transform-origin",
                           "TransformOrigin",
                           "computed::TransformOrigin::initial_value()",
@@ -61,7 +62,6 @@ ${helpers.predefined_type("-moz-window-transform-origin",
                           gecko_ffi_name="mWindowTransformOrigin",
                           products="gecko",
                           boxed=True,
-                          enabled_in="chrome",
                           spec="None (Nonstandard internal property)")}
 
 // TODO(emilio): Probably also should be hidden from content.