diff --git a/Libraries/LibGfx/Rect.h b/Libraries/LibGfx/Rect.h
index fcf8c331510..25231df8072 100644
--- a/Libraries/LibGfx/Rect.h
+++ b/Libraries/LibGfx/Rect.h
@@ -395,6 +395,12 @@ public:
             && other.top() < bottom();
     }
 
+    [[nodiscard]] bool edge_adjacent_intersects(Rect<T> const& other) const
+    {
+        return max(left(), other.left()) <= min(right(), other.right())
+            && max(top(), other.top()) <= min(bottom(), other.bottom());
+    }
+
     template<typename Container>
     [[nodiscard]] bool intersects(Container const& others) const
     {
diff --git a/Libraries/LibWeb/DOM/Document.cpp b/Libraries/LibWeb/DOM/Document.cpp
index 9cc494e2596..bd7e0951c07 100644
--- a/Libraries/LibWeb/DOM/Document.cpp
+++ b/Libraries/LibWeb/DOM/Document.cpp
@@ -4583,7 +4583,7 @@ void Document::run_the_update_intersection_observations_steps(HighResolutionTime
                 // 8. Let isIntersecting be true if targetRect and rootBounds intersect or are edge-adjacent, even if the
                 //    intersection has zero area (because rootBounds or targetRect have zero area).
                 CSSPixelRect target_rect_as_pixel_rect(target_rect->x(), target_rect->y(), target_rect->width(), target_rect->height());
-                is_intersecting = target_rect_as_pixel_rect.intersects(root_bounds);
+                is_intersecting = target_rect_as_pixel_rect.edge_adjacent_intersects(root_bounds);
 
                 // 9. If targetArea is non-zero, let intersectionRatio be intersectionArea divided by targetArea.
                 //    Otherwise, let intersectionRatio be 1 if isIntersecting is true, or 0 if isIntersecting is false.
diff --git a/Tests/LibWeb/Text/expected/wpt-import/intersection-observer/edge-inclusive-intersection.txt b/Tests/LibWeb/Text/expected/wpt-import/intersection-observer/edge-inclusive-intersection.txt
index ef612a6d2b7..66648fb31d5 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/intersection-observer/edge-inclusive-intersection.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/intersection-observer/edge-inclusive-intersection.txt
@@ -2,10 +2,9 @@ Harness status: OK
 
 Found 5 tests
 
-2 Pass
-3 Fail
+5 Pass
 Pass	IntersectionObserver should detect and report edge-adjacent and zero-area intersections.
 Pass	First rAF.
-Fail	Set transform=translateY(200px) on target.
-Fail	Set transform=translateY(201px) on target.
-Fail	Set transform=translateY(185px) on target.
\ No newline at end of file
+Pass	Set transform=translateY(200px) on target.
+Pass	Set transform=translateY(201px) on target.
+Pass	Set transform=translateY(185px) on target.
\ No newline at end of file