diff --git a/components/layout/fragment.rs b/components/layout/fragment.rs
index 55ee934bb7e..f2f1bafcf68 100644
--- a/components/layout/fragment.rs
+++ b/components/layout/fragment.rs
@@ -2023,15 +2023,17 @@ impl Fragment {
overflow_x::T::visible,
overflow_x::T::visible) |
(position::T::fixed,
+ z_index::T::Auto,
+ overflow_x::T::visible,
+ overflow_x::T::visible) |
+ (position::T::relative,
z_index::T::Auto,
overflow_x::T::visible,
overflow_x::T::visible) => false,
(position::T::absolute, _, _, _) |
- (position::T::fixed, _, _, _) => true,
- (position::T::relative, _, _, _) |
+ (position::T::fixed, _, _, _) |
+ (position::T::relative, _, _, _) => true,
(position::T::static_, _, _, _) => {
- // FIXME(pcwalton): `position: relative` establishes a new stacking context if
- // `z-index` is not `auto`. But this matches what we did before.
false
}
}
diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 40c2e3bd3af..66e0f9a085e 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -291,6 +291,7 @@ flaky_cpu == linebreak_simple_a.html linebreak_simple_b.html
== position_relative_a.html position_relative_b.html
== position_relative_inline_block_a.html position_relative_inline_block_ref.html
== position_relative_painting_order_a.html position_relative_painting_order_ref.html
+== position_relative_stacking_context_a.html position_relative_stacking_context_ref.html
== position_relative_top_percentage_a.html position_relative_top_percentage_b.html
== pre_ignorable_whitespace_a.html pre_ignorable_whitespace_ref.html
== pre_with_tab.html pre_with_tab_ref.html
diff --git a/tests/ref/position_relative_stacking_context_a.html b/tests/ref/position_relative_stacking_context_a.html
new file mode 100644
index 00000000000..7bc60e116e1
--- /dev/null
+++ b/tests/ref/position_relative_stacking_context_a.html
@@ -0,0 +1,24 @@
+
+
+
+
+
diff --git a/tests/ref/position_relative_stacking_context_ref.html b/tests/ref/position_relative_stacking_context_ref.html
new file mode 100644
index 00000000000..1bb24a009b4
--- /dev/null
+++ b/tests/ref/position_relative_stacking_context_ref.html
@@ -0,0 +1,16 @@
+
+
+
+
diff --git a/tests/wpt/metadata-css/css21_dev/html4/floats-041.htm.ini b/tests/wpt/metadata-css/css21_dev/html4/min-height-106.htm.ini
similarity index 61%
rename from tests/wpt/metadata-css/css21_dev/html4/floats-041.htm.ini
rename to tests/wpt/metadata-css/css21_dev/html4/min-height-106.htm.ini
index cf50a585b2e..83bdbfdf497 100644
--- a/tests/wpt/metadata-css/css21_dev/html4/floats-041.htm.ini
+++ b/tests/wpt/metadata-css/css21_dev/html4/min-height-106.htm.ini
@@ -1,3 +1,3 @@
-[floats-041.htm]
+[min-height-106.htm]
type: reftest
expected: FAIL
diff --git a/tests/wpt/mozilla/tests/mozilla/canvas/drawimage_html_image_5_ref.html b/tests/wpt/mozilla/tests/mozilla/canvas/drawimage_html_image_5_ref.html
index 66b7cc194ac..d8ec95525de 100644
--- a/tests/wpt/mozilla/tests/mozilla/canvas/drawimage_html_image_5_ref.html
+++ b/tests/wpt/mozilla/tests/mozilla/canvas/drawimage_html_image_5_ref.html
@@ -20,7 +20,6 @@
left: 50px;
width: 64px;
height: 32px;
- overflow: hidden;
}
#destination .img img{