diff --git a/mozilla/layout/base/nsCSSRendering.cpp b/mozilla/layout/base/nsCSSRendering.cpp
index 8c20ced7a52..be3ba13441e 100644
--- a/mozilla/layout/base/nsCSSRendering.cpp
+++ b/mozilla/layout/base/nsCSSRendering.cpp
@@ -1724,7 +1724,7 @@ void nsCSSRendering::PaintBorder(nsPresContext* aPresContext,
switch ( bordStyleRadius[i].GetUnit()) {
case eStyleUnit_Percent:
percent = bordStyleRadius[i].GetPercentValue();
- borderRadii[i] = (nscoord)(percent * aBorderArea.width);
+ borderRadii[i] = (nscoord)(percent * aForFrame->GetSize().width);
break;
case eStyleUnit_Coord:
borderRadii[i] = bordStyleRadius[i].GetCoordValue();
@@ -3347,7 +3347,8 @@ nsCSSRendering::PaintBackgroundColor(nsPresContext* aPresContext,
borderRadii[side] = 0;
switch (bordStyleRadius[side].GetUnit()) {
case eStyleUnit_Percent:
- borderRadii[side] = nscoord(bordStyleRadius[side].GetPercentValue() * aBgClipArea.width);
+ borderRadii[side] = nscoord(bordStyleRadius[side].GetPercentValue() *
+ aForFrame->GetSize().width);
break;
case eStyleUnit_Coord:
borderRadii[side] = bordStyleRadius[side].GetCoordValue();
diff --git a/mozilla/layout/reftests/bugs/364861-1-ref.html b/mozilla/layout/reftests/bugs/364861-1-ref.html
new file mode 100644
index 00000000000..590b286cd82
--- /dev/null
+++ b/mozilla/layout/reftests/bugs/364861-1-ref.html
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
diff --git a/mozilla/layout/reftests/bugs/364861-1.html b/mozilla/layout/reftests/bugs/364861-1.html
new file mode 100644
index 00000000000..5937a9e95f1
--- /dev/null
+++ b/mozilla/layout/reftests/bugs/364861-1.html
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
diff --git a/mozilla/layout/reftests/reftest.list b/mozilla/layout/reftests/reftest.list
index d76107352cf..afbb012860f 100644
--- a/mozilla/layout/reftests/reftest.list
+++ b/mozilla/layout/reftests/reftest.list
@@ -30,6 +30,7 @@ f== bugs/360065-1.html bugs/360065-1-ref.html # bug 18217
!= bugs/315620-2b.xhtml bugs/315620-2-ref.xhtml
== bugs/363637-1.html bugs/363637-1-ref.html
== bugs/364079-1.html bugs/364079-1-ref.html
+== bugs/364861-1.html bugs/364861-1-ref.html
# table-dom/
== table-dom/appendCells1.html table-dom/appendCells1-ref.html