diff --git a/css/filter-effects/backdrop-filter-clip-rect-2.html b/css/filter-effects/backdrop-filter-clip-rect-2.html
new file mode 100644
index 000000000000000..8116bd0dcf292eb
--- /dev/null
+++ b/css/filter-effects/backdrop-filter-clip-rect-2.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Clip the filter at border box of element</title>
+<link rel="author" href="mailto:Hironori.Fujii@sony.com">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
+<link rel="match"  href="reference/backdrop-filter-clip-rect-2-ref.html">
+<meta name="fuzzy" content="maxDifference=0-80; totalPixels=0-1000" />
+<style>
+.box {
+  display: inline-block;
+  box-sizing: border-box;
+  width: 100px;
+  height: 100px;
+  border-radius: 10px 20px 30px 40px;
+  border-width: 10px;
+}
+.no-bf > .box {
+  background: black;
+}
+.bf > .box {
+  border-color: transparent;
+  backdrop-filter: invert(1);
+}
+</style>
+<div>
+  <p>Expected: Same size rounded black boxes.</p>
+</div>
+
+<div class="no-bf">
+  <div class="box"></div>
+  <div class="box"></div>
+  <div class="box"></div>
+</div>
+<div class="bf">
+  <div class="box" style="border-style:none"></div>
+  <div class="box" style="border-style:solid"></div>
+  <div class="box" style="border-style:dotted"></div>
+</div>
diff --git a/css/filter-effects/backdrop-filter-clip-rect.html b/css/filter-effects/backdrop-filter-clip-rect.html
index 5d5c707116c4fa2..35b74652dcec6da 100644
--- a/css/filter-effects/backdrop-filter-clip-rect.html
+++ b/css/filter-effects/backdrop-filter-clip-rect.html
@@ -4,6 +4,7 @@
 <link rel="author" href="mailto:masonf@chromium.org">
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
 <link rel="match"  href="backdrop-filter-clip-rect-ref.html">
+<meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-1" />
 
 <div>
   <p>Expected: A green box, color-inverted inside the short, wide box with a<br>
diff --git a/css/filter-effects/reference/backdrop-filter-clip-rect-2-ref.html b/css/filter-effects/reference/backdrop-filter-clip-rect-2-ref.html
new file mode 100644
index 000000000000000..f12e88515fe9d3d
--- /dev/null
+++ b/css/filter-effects/reference/backdrop-filter-clip-rect-2-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="author" href="mailto:Hironori.Fujii@sony.com">
+<style>
+.box {
+  display: inline-block;
+  box-sizing: border-box;
+  width: 100px;
+  height: 100px;
+  border-radius: 10px 20px 30px 40px;
+  border-width: 10px;
+}
+.no-bf > .box {
+  background: black;
+}
+</style>
+<div>
+  <p>Expected: Same size rounded black boxes.</p>
+</div>
+
+<div class="no-bf">
+  <div class="box"></div>
+  <div class="box"></div>
+  <div class="box"></div>
+</div>
+<div class="no-bf">
+  <div class="box"></div>
+  <div class="box"></div>
+  <div class="box"></div>
+</div>
