diff --git a/layout/base/crashtests/crashtests.list b/layout/base/crashtests/crashtests.list
index d56ae9f51320..355ad7b3b9fe 100644
--- a/layout/base/crashtests/crashtests.list
+++ b/layout/base/crashtests/crashtests.list
@@ -359,7 +359,7 @@ load 560447-1.html
 load 564063-1.html
 load 567292-1.xhtml
 load 569018-1.html
-load 570038-1.html
+pref(layout.css.xul-display-values.content.enabled,true) load 570038-1.html
 load 572003.xul
 load 572582-1.xhtml
 load 576649-1.html
diff --git a/layout/reftests/bugs/reftest.list b/layout/reftests/bugs/reftest.list
index 5017c4729d22..7a0967829341 100644
--- a/layout/reftests/bugs/reftest.list
+++ b/layout/reftests/bugs/reftest.list
@@ -1303,7 +1303,7 @@ random-if(d2d) == 478377-1.xul 478377-1-ref.xul
 == 478811-4.html 478811-4-ref.html
 == 478956-1a.html 478956-1-ref.html
 == 478956-1b.html 478956-1-ref.html
-== 480017-1.html 480017-1-ref.html
+pref(layout.css.xul-display-values.content.enabled,true) == 480017-1.html 480017-1-ref.html
 == 480880-1a.html 480880-1-ref.html
 == 480880-1b.html 480880-1-ref.html
 == 480880-1c.html 480880-1-ref.html
diff --git a/layout/style/test/test_flexbox_child_display_values.xhtml b/layout/style/test/test_flexbox_child_display_values.xhtml
index ef9a507cb605..bcb06fcab753 100644
--- a/layout/style/test/test_flexbox_child_display_values.xhtml
+++ b/layout/style/test/test_flexbox_child_display_values.xhtml
@@ -141,15 +141,6 @@ function main() {
     "inline-block",
     "-moz-box",
     "-moz-inline-box",
-    "-moz-grid",
-    "-moz-inline-grid",
-    "-moz-grid-group",
-    "-moz-grid-line",
-    "-moz-stack",
-    "-moz-inline-stack",
-    "-moz-deck",
-    "-moz-popup",
-    "-moz-groupbox",
   ];
 
   dispValsThatComputeToBlockInAFlexContainer.forEach(