diff --git a/gfx/layers/apz/test/mochitest/helper_overscroll_behavior_bug1494440.html b/gfx/layers/apz/test/mochitest/helper_overscroll_behavior_bug1494440.html
index b2e3be2ca866..148940098562 100644
--- a/gfx/layers/apz/test/mochitest/helper_overscroll_behavior_bug1494440.html
+++ b/gfx/layers/apz/test/mochitest/helper_overscroll_behavior_bug1494440.html
@@ -6,7 +6,7 @@
-
diff --git a/layout/base/crashtests/1586600.html b/layout/base/crashtests/1586600.html
new file mode 100644
index 000000000000..c825c5c85ed1
--- /dev/null
+++ b/layout/base/crashtests/1586600.html
@@ -0,0 +1,5 @@
+
+
+
diff --git a/layout/base/crashtests/crashtests.list b/layout/base/crashtests/crashtests.list
index 33b1ae3d4264..cb098a2569b3 100644
--- a/layout/base/crashtests/crashtests.list
+++ b/layout/base/crashtests/crashtests.list
@@ -586,3 +586,4 @@ load 1578844-2.html
pref(layout.css.column-span.enabled,true) load 1579953-1.html
pref(layout.css.column-span.enabled,true) load 1580576.html
load empty-mask.html
+load 1586600.html
diff --git a/layout/base/nsPresContext.cpp b/layout/base/nsPresContext.cpp
index c238000249c4..0dc1f6a76473 100644
--- a/layout/base/nsPresContext.cpp
+++ b/layout/base/nsPresContext.cpp
@@ -1037,10 +1037,8 @@ static bool CheckOverflow(const ComputedStyle* aComputedStyle,
return false;
}
- if (display->mOverflowX == StyleOverflow::Visible &&
- display->mOverscrollBehaviorX == StyleOverscrollBehavior::Auto &&
- display->mOverscrollBehaviorY == StyleOverscrollBehavior::Auto &&
- display->mScrollSnapType.strictness == StyleScrollSnapStrictness::None) {
+ if (display->mOverflowX == StyleOverflow::Visible) {
+ MOZ_ASSERT(display->mOverflowY == StyleOverflow::Visible);
return false;
}
diff --git a/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-005.html b/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-005.html
new file mode 100644
index 000000000000..e4de57695846
--- /dev/null
+++ b/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-005.html
@@ -0,0 +1,17 @@
+
+CSS Overflow Test: overscroll-behavior doesn't stop overflow from being propagated from the body
+
+
+
+
+
+
+The viewport should have scrollbars, not the body.
diff --git a/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-006.html b/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-006.html
new file mode 100644
index 000000000000..475815068357
--- /dev/null
+++ b/testing/web-platform/tests/css/css-overflow/overflow-body-propagation-006.html
@@ -0,0 +1,17 @@
+
+CSS Overflow Test: scroll-snap-type doesn't stop overflow from being propagated from the body
+
+
+
+
+
+
+The viewport should have scrollbars, not the body.