diff --git a/doc/classes/CanvasItem.xml b/doc/classes/CanvasItem.xml
index df94945848a..dfb06a494f3 100644
--- a/doc/classes/CanvasItem.xml
+++ b/doc/classes/CanvasItem.xml
@@ -655,6 +655,7 @@
 		</member>
 		<member name="visibility_layer" type="int" setter="set_visibility_layer" getter="get_visibility_layer" default="1">
 			The rendering layer in which this [CanvasItem] is rendered by [Viewport] nodes. A [Viewport] will render a [CanvasItem] if it and all its parents share a layer with the [Viewport]'s canvas cull mask.
+			[b]Note:[/b] A [CanvasItem] does not inherit its parents' visibility layers. This means that if a parent [CanvasItem] does not have all the same layers as its child, the child may not be visible even if both the parent and child have [member visible] set to [code]true[/code]. For example, if a parent has layer 1 and a child has layer 2, the child will not be visible in a [Viewport] with the canvas cull mask set to layer 1 or 2 (see [member Viewport.canvas_cull_mask]). To ensure that both the parent and child are visible, the parent must have both layers 1 and 2, or the child must have [member top_level] set to [code]true[/code].
 		</member>
 		<member name="visible" type="bool" setter="set_visible" getter="is_visible" default="true">
 			If [code]true[/code], this [CanvasItem] may be drawn. Whether this [CanvasItem] is actually drawn depends on the visibility of all of its [CanvasItem] ancestors. In other words: this [CanvasItem] will be drawn when [method is_visible_in_tree] returns [code]true[/code] and all [CanvasItem] ancestors share at least one [member visibility_layer] with this [CanvasItem].
diff --git a/doc/classes/Viewport.xml b/doc/classes/Viewport.xml
index 40b720c7422..54f87ca72b8 100644
--- a/doc/classes/Viewport.xml
+++ b/doc/classes/Viewport.xml
@@ -325,6 +325,7 @@
 		</member>
 		<member name="canvas_cull_mask" type="int" setter="set_canvas_cull_mask" getter="get_canvas_cull_mask" default="4294967295">
 			The rendering layers in which this [Viewport] renders [CanvasItem] nodes.
+			[b]Note:[/b] A [CanvasItem] does not inherit its parents' visibility layers. See [member CanvasItem.visibility_layer]'s description for details.
 		</member>
 		<member name="canvas_item_default_texture_filter" type="int" setter="set_default_canvas_item_texture_filter" getter="get_default_canvas_item_texture_filter" enum="Viewport.DefaultCanvasItemTextureFilter" default="1">
 			Sets the default filter mode used by [CanvasItem]s in this Viewport.