--- a/layout/reftests/bugs/reftest.list
+++ b/layout/reftests/bugs/reftest.list
@@ -825,17 +825,17 @@ fuzzy-if(Android,5,283) == 397428-1.html
 fuzzy-if(skiaContent,2,21) == 398682-1.html 398682-1-ref.html
 == 398797-1a.html 398797-1-ref.html
 == 398797-1b.html 398797-1-ref.html
 == 398797-1c.html 398797-1-ref.html
 == 398797-1d.html 398797-1-ref.html
 == 399209-1.html 399209-1-ref.html
 == 399209-2.html 399209-2-ref.html
 == 399258-1.html 399258-1-ref.html
-fails-if(stylo) == 399384-1.html 399384-1-ref.html
+== 399384-1.html 399384-1-ref.html
 random-if(gtkWidget) == 399636-standards-css.html 399636-standards-ref.html # bug 429022
 random-if(gtkWidget) == 399636-standards-html.html 399636-standards-ref.html # bug 429022
 random-if(gtkWidget) == 399636-quirks-css.html 399636-quirks-ref.html # bug 429022
 # We can't rely on this test working on platforms other than Windows and
 # Mac because they need not have a font called "Symbol".
 fails-if(winWidget) fails-if(cocoaWidget) random-if(!cocoaWidget&&!winWidget) != 399636-quirks-html.html 399636-quirks-ref.html # windows failure bug 429017, mac failure bug 429019
 == 400081-1.html about:blank
 == 400171-1a.html 400171-1-ref.html

--- a/layout/reftests/mathml/reftest.list
+++ b/layout/reftests/mathml/reftest.list
@@ -289,18 +289,18 @@ fails-if(Android) == mathvariant-1a.html
 fails-if(Android) == mathvariant-1b.html mathvariant-1b-ref.html # Bug 1010679
 fails-if(Android) == mathvariant-1c.html mathvariant-1c-ref.html # Bug 1010679
 == mathvariant-1d.html mathvariant-1d-ref.html
 fails-if(Android||OSX) == mathvariant-2.html mathvariant-2-ref.html # Bugs 1010678, 1010679
 fails-if(stylo) == mathvariant-3.html mathvariant-3-ref.html
 == mathvariant-4.html mathvariant-4-ref.html
 == mathvariant-5.html mathvariant-5-ref.html
 == dtls-1.html dtls-1-ref.html
-== dtls-2.html dtls-2-ref.html
-== dtls-3.html dtls-3-ref.html
+fails-if(stylo) == dtls-2.html dtls-2-ref.html # bug 1366206
+fails-if(stylo) == dtls-3.html dtls-3-ref.html # bug 1366206
 == ssty-1.html ssty-1-ref.html
 == ssty-2.html ssty-2-ref.html
 == ssty-3.html ssty-3-ref.html
 == ssty-4.html ssty-4-ref.html
 == mathscript-1.html mathscript-1-ref.html
 == mathscript-2.html mathscript-2-ref.html
 == mo-accent-dynamic.html mo-accent-dynamic-ref.html
 == mo-movablelimits-dynamic.html mo-movablelimits-dynamic-ref.html

--- a/layout/style/test/stylo-failures.md
+++ b/layout/style/test/stylo-failures.md
@@ -58,16 +58,17 @@ to mochitest command.
     * test_bug221428.html [1]
     * test_css_eof_handling.html [1]
 * test_bug397427.html: @import issue bug 1331291 and CSSOM support of @import [1]
 * console support bug 1352669
   * test_bug413958.html `monitorConsole` [3]
   * test_parser_diagnostics_unprintables.html [550]
 * Transition support:
   * test_transitions.html: pseudo elements [12]
+  * test_transitions_and_reframes.html `pseudo-element`: bug 1366422 [4]
   * Events:
     * test_animations_event_order.html [2]
 * test_computed_style.html `gradient`: -webkit-prefixed gradient values [13]
 * test_bug829816.html: counter-{reset,increment} serialization difference bug 1363968 [8]
 * dynamic change on \@counter-style rule bug 1363590
   * test_counter_style.html [11]
   * test_counter_style.html asserts [11]
   * test_counter_descriptor_storage.html asserts [110]