diff --git a/apps/dotcom/src/components/IFrameProtector.tsx b/apps/dotcom/src/components/IFrameProtector.tsx
index d778fbda6..b4fd9f06d 100644
--- a/apps/dotcom/src/components/IFrameProtector.tsx
+++ b/apps/dotcom/src/components/IFrameProtector.tsx
@@ -114,7 +114,7 @@ export function IFrameProtector({
 			<div className="tldraw__editor tl-container">
 				<div className="iframe-warning__container">
 					<a className="iframe-warning__link" href={url} target="_blank">
-						{'Visit this page on tldraw.com '}
+						{'Visit this page on tldraw.com'}
 						<svg
 							width="15"
 							height="15"
diff --git a/packages/tldraw/src/lib/ui/components/HelperButtons/BackToContent.tsx b/packages/tldraw/src/lib/ui/components/HelperButtons/BackToContent.tsx
index 004dedfdf..a68b0ce02 100644
--- a/packages/tldraw/src/lib/ui/components/HelperButtons/BackToContent.tsx
+++ b/packages/tldraw/src/lib/ui/components/HelperButtons/BackToContent.tsx
@@ -1,5 +1,5 @@
-import { useEditor } from '@tldraw/editor'
-import { useEffect, useState } from 'react'
+import { useEditor, useQuickReactor } from '@tldraw/editor'
+import { useRef, useState } from 'react'
 import { useActions } from '../../context/actions'
 import { TldrawUiMenuItem } from '../primitives/menus/TldrawUiMenuItem'
 
@@ -9,33 +9,25 @@ export function BackToContent() {
 	const actions = useActions()
 
 	const [showBackToContent, setShowBackToContent] = useState(false)
+	const rIsShowing = useRef(false)
 
-	useEffect(() => {
-		let showBackToContentPrev = false
-
-		const interval = setInterval(() => {
-			const renderingShapes = editor.getRenderingShapes()
-			const renderingBounds = editor.getRenderingBounds()
-
-			// Rendering shapes includes all the shapes in the current page.
-			// We have to filter them down to just the shapes that are inside the renderingBounds.
-			const visibleShapes = renderingShapes.filter((s) => {
-				const maskedPageBounds = editor.getShapeMaskedPageBounds(s.id)
-				return maskedPageBounds && renderingBounds.includes(maskedPageBounds)
-			})
-			const showBackToContentNow =
-				visibleShapes.length === 0 && editor.getCurrentPageShapes().length > 0
+	useQuickReactor(
+		'toggle showback to content',
+		() => {
+			const showBackToContentPrev = rIsShowing.current
+			const shapeIds = editor.getCurrentPageShapeIds()
+			let showBackToContentNow = false
+			if (shapeIds.size) {
+				showBackToContentNow = shapeIds.size === editor.getCulledShapes().size
+			}
 
 			if (showBackToContentPrev !== showBackToContentNow) {
 				setShowBackToContent(showBackToContentNow)
-				showBackToContentPrev = showBackToContentNow
+				rIsShowing.current = showBackToContentNow
 			}
-		}, 1000)
-
-		return () => {
-			clearInterval(interval)
-		}
-	}, [editor])
+		},
+		[editor]
+	)
 
 	if (!showBackToContent) return null