diff --git a/Cargo.lock b/Cargo.lock
index 68d234e8886..d24134b383d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3551,7 +3551,7 @@ dependencies = [
 [[package]]
 name = "webrender"
 version = "0.57.2"
-source = "git+https://github.com/servo/webrender#e7c491c1d32c4e6a20f1b765a6069d332b1474a2"
+source = "git+https://github.com/servo/webrender#81920df73bdf4f129cfc732a2bd6d2587088e838"
 dependencies = [
  "app_units 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "base64 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3586,7 +3586,7 @@ dependencies = [
 [[package]]
 name = "webrender_api"
 version = "0.57.2"
-source = "git+https://github.com/servo/webrender#e7c491c1d32c4e6a20f1b765a6069d332b1474a2"
+source = "git+https://github.com/servo/webrender#81920df73bdf4f129cfc732a2bd6d2587088e838"
 dependencies = [
  "app_units 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bincode 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/components/layout/display_list/webrender_helpers.rs b/components/layout/display_list/webrender_helpers.rs
index 99df447f620..de16ef9070b 100644
--- a/components/layout/display_list/webrender_helpers.rs
+++ b/components/layout/display_list/webrender_helpers.rs
@@ -11,7 +11,7 @@ use gfx::display_list::{BorderDetails, ClipScrollNode};
 use gfx::display_list::{ClipScrollNodeIndex, ClipScrollNodeType, DisplayItem};
 use gfx::display_list::{DisplayList, StackingContextType};
 use msg::constellation_msg::PipelineId;
-use webrender_api::{self, ClipAndScrollInfo, ClipId, DisplayListBuilder};
+use webrender_api::{self, ClipAndScrollInfo, ClipId, DisplayListBuilder, GlyphRasterSpace};
 
 pub trait WebRenderDisplayListConverter {
     fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder;
@@ -232,6 +232,7 @@ impl WebRenderDisplayItemConverter for DisplayItem {
                     stacking_context.perspective,
                     stacking_context.mix_blend_mode,
                     stacking_context.filters.clone(),
+                    GlyphRasterSpace::Screen,
                 );
             },
             DisplayItem::PopStackingContext(_) => builder.pop_stacking_context(),
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round-roundup.xht.ini b/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round-roundup.xht.ini
deleted file mode 100644
index 9ac43f3026c..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round-roundup.xht.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[background-repeat-round-roundup.xht]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round.xht.ini b/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round.xht.ini
deleted file mode 100644
index 80199983591..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-repeat/background-repeat-round.xht.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[background-repeat-round.xht]
-  type: reftest
-  expected:
-    if os == "linux": FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-size-025.html.ini b/tests/wpt/metadata/css/css-backgrounds/background-size-025.html.ini
deleted file mode 100644
index 504e0be71d3..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-size-025.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[background-size-025.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-size-027.html.ini b/tests/wpt/metadata/css/css-backgrounds/background-size-027.html.ini
deleted file mode 100644
index e9039c30e1f..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-size-027.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[background-size-027.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-contain.xht.ini b/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-contain.xht.ini
deleted file mode 100644
index c6562847c45..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-contain.xht.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[background-size-contain.xht]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-cover.xht.ini b/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-cover.xht.ini
deleted file mode 100644
index 0a3c46b2880..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/background-size/background-size-cover.xht.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[background-size-cover.xht]
-  type: reftest
-  expected: FAIL