diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index c0587599d9e..68a81c1b76d 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -15,9 +15,6 @@ flaky_cpu == append_style_a.html append_style_b.html
 
 resolution=300x300,device-pixel-ratio=2 != pixel_snapping_border_a.html pixel_snapping_border_ref.html
 resolution=300x300,device-pixel-ratio=2 != pixel_snapping_position_a.html pixel_snapping_position_ref.html
-# text_decoration_propagation_a.html text_decoration_propagation_b.html
-!= text_overflow_a.html text_overflow_ref.html
-flaky_cpu,prefs:"layout.writing-mode.enabled" == vertical-lr-blocks.html vertical-lr-blocks_ref.html
 resolution=800x600 == viewport_percentage_vmin_vmax.html viewport_percentage_vmin_vmax_a.html
 # resolution=600x800 == viewport_percentage_vmin_vmax.html viewport_percentage_vmin_vmax_b.html
 resolution=800x600 == viewport_percentage_vw_vh.html viewport_percentage_vw_vh_a.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index da86df98d0d..e96f940dda4 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -4375,6 +4375,18 @@
             "url": "/_mozilla/css/text_decoration_cached.html"
           }
         ],
+        "css/text_decoration_propagation_a.html": [
+          {
+            "path": "css/text_decoration_propagation_a.html",
+            "references": [
+              [
+                "/_mozilla/css/text_decoration_propagation_b.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/text_decoration_propagation_a.html"
+          }
+        ],
         "css/text_decoration_smoke_a.html": [
           {
             "path": "css/text_decoration_smoke_a.html",
@@ -4423,6 +4435,18 @@
             "url": "/_mozilla/css/text_justify_none_a.html"
           }
         ],
+        "css/text_overflow_a.html": [
+          {
+            "path": "css/text_overflow_a.html",
+            "references": [
+              [
+                "/_mozilla/css/text_overflow_ref.html",
+                "!="
+              ]
+            ],
+            "url": "/_mozilla/css/text_overflow_a.html"
+          }
+        ],
         "css/text_overflow_basic_a.html": [
           {
             "path": "css/text_overflow_basic_a.html",
@@ -4627,6 +4651,18 @@
             "url": "/_mozilla/css/upper_id_attr.html"
           }
         ],
+        "css/vertical-lr-blocks.html": [
+          {
+            "path": "css/vertical-lr-blocks.html",
+            "references": [
+              [
+                "/_mozilla/css/vertical-lr-blocks_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/vertical-lr-blocks.html"
+          }
+        ],
         "css/vertical_align_bottom_a.html": [
           {
             "path": "css/vertical_align_bottom_a.html",
@@ -10146,6 +10182,18 @@
           "url": "/_mozilla/css/text_decoration_cached.html"
         }
       ],
+      "css/text_decoration_propagation_a.html": [
+        {
+          "path": "css/text_decoration_propagation_a.html",
+          "references": [
+            [
+              "/_mozilla/css/text_decoration_propagation_b.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/text_decoration_propagation_a.html"
+        }
+      ],
       "css/text_decoration_smoke_a.html": [
         {
           "path": "css/text_decoration_smoke_a.html",
@@ -10194,6 +10242,18 @@
           "url": "/_mozilla/css/text_justify_none_a.html"
         }
       ],
+      "css/text_overflow_a.html": [
+        {
+          "path": "css/text_overflow_a.html",
+          "references": [
+            [
+              "/_mozilla/css/text_overflow_ref.html",
+              "!="
+            ]
+          ],
+          "url": "/_mozilla/css/text_overflow_a.html"
+        }
+      ],
       "css/text_overflow_basic_a.html": [
         {
           "path": "css/text_overflow_basic_a.html",
@@ -10398,6 +10458,18 @@
           "url": "/_mozilla/css/upper_id_attr.html"
         }
       ],
+      "css/vertical-lr-blocks.html": [
+        {
+          "path": "css/vertical-lr-blocks.html",
+          "references": [
+            [
+              "/_mozilla/css/vertical-lr-blocks_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/vertical-lr-blocks.html"
+        }
+      ],
       "css/vertical_align_bottom_a.html": [
         {
           "path": "css/vertical_align_bottom_a.html",
diff --git a/tests/wpt/mozilla/meta/css/text_decoration_propagation_a.html.ini b/tests/wpt/mozilla/meta/css/text_decoration_propagation_a.html.ini
new file mode 100644
index 00000000000..12d7ad7b519
--- /dev/null
+++ b/tests/wpt/mozilla/meta/css/text_decoration_propagation_a.html.ini
@@ -0,0 +1,4 @@
+[text_decoration_propagation_a.html]
+  type: reftest
+  expected: FAIL
+  bug: https://github.com/servo/servo/issues/8783
diff --git a/tests/wpt/mozilla/meta/css/vertical-lr-blocks.html.ini b/tests/wpt/mozilla/meta/css/vertical-lr-blocks.html.ini
new file mode 100644
index 00000000000..2858c27f6ed
--- /dev/null
+++ b/tests/wpt/mozilla/meta/css/vertical-lr-blocks.html.ini
@@ -0,0 +1,5 @@
+prefs: [layout.writing-mode.enabled:true]
+[vertical-lr-blocks.html]
+  type: reftest
+  expected: FAIL
+  bug: https://github.com/servo/servo/issues/3926
diff --git a/tests/ref/text_decoration_propagation_a.html b/tests/wpt/mozilla/tests/css/text_decoration_propagation_a.html
similarity index 82%
rename from tests/ref/text_decoration_propagation_a.html
rename to tests/wpt/mozilla/tests/css/text_decoration_propagation_a.html
index 4811fbb2a2a..52975110ef0 100644
--- a/tests/ref/text_decoration_propagation_a.html
+++ b/tests/wpt/mozilla/tests/css/text_decoration_propagation_a.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 <title>I CAN'T LIVE ANOTHER DAY WITHOUT AIR CONDITIONING!</title>
+<link rel=match href=text_decoration_propagation_b.html>
 <style>
 #a {
     text-decoration: underline;
diff --git a/tests/ref/text_decoration_propagation_b.html b/tests/wpt/mozilla/tests/css/text_decoration_propagation_b.html
similarity index 100%
rename from tests/ref/text_decoration_propagation_b.html
rename to tests/wpt/mozilla/tests/css/text_decoration_propagation_b.html
diff --git a/tests/ref/text_overflow_a.html b/tests/wpt/mozilla/tests/css/text_overflow_a.html
similarity index 86%
rename from tests/ref/text_overflow_a.html
rename to tests/wpt/mozilla/tests/css/text_overflow_a.html
index 70818c2b914..2a3ca5be0f7 100644
--- a/tests/ref/text_overflow_a.html
+++ b/tests/wpt/mozilla/tests/css/text_overflow_a.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
+<link rel=mismatch href=text_overflow_ref.html>
 <style>
 p {
     width: 128px;
diff --git a/tests/ref/text_overflow_ref.html b/tests/wpt/mozilla/tests/css/text_overflow_ref.html
similarity index 100%
rename from tests/ref/text_overflow_ref.html
rename to tests/wpt/mozilla/tests/css/text_overflow_ref.html
diff --git a/tests/ref/vertical-lr-blocks.html b/tests/wpt/mozilla/tests/css/vertical-lr-blocks.html
similarity index 86%
rename from tests/ref/vertical-lr-blocks.html
rename to tests/wpt/mozilla/tests/css/vertical-lr-blocks.html
index c68fee90788..46d8586a6fc 100644
--- a/tests/ref/vertical-lr-blocks.html
+++ b/tests/wpt/mozilla/tests/css/vertical-lr-blocks.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <html>
 <head>
+<link rel=match href=vertical-lr-blocks_ref.html>
 <style>
 html { writing-mode: vertical-rl }
 body { margin: 10px }
diff --git a/tests/ref/vertical-lr-blocks_ref.html b/tests/wpt/mozilla/tests/css/vertical-lr-blocks_ref.html
similarity index 100%
rename from tests/ref/vertical-lr-blocks_ref.html
rename to tests/wpt/mozilla/tests/css/vertical-lr-blocks_ref.html