--- a/layout/style/test/stylo-failures.md
+++ b/layout/style/test/stylo-failures.md
@@ -301,22 +301,18 @@ to mochitest command.
   * mask shorthand servo/servo#15772
     * test_property_syntax_errors.html `mask'` [76]
 * Incorrect serialization
   * border-radius and -moz-outline-radius shorthand servo/servo#15169
     * test_priority_preservation.html `border-radius` [4]
     * test_value_storage.html `border-radius:` [64]
     * ... `-moz-outline-radius:` [31]
     * test_shorthand_property_getters.html `should condense to shortest possible` [6]
-  * background-position is serialized to invalid value sometimes bug 1355017
-    * test_shorthand_property_getters.html `background-position` [1]
   * color value not canonicalized servo/servo#15397
     * test_shorthand_property_getters.html `should condense to canonical case` [2]
-  * background-position invalid 3-value form **issue to be filed**
-    * test_shorthand_property_getters.html `should serialize to 4-value` [2]
   * test_variables.html `--weird`: name of custom property is not escaped properly servo/servo#15399 [1]
   * :not(*) doesn't serialize properly servo/servo#16017
     * test_selectors.html `:not()` [8]
     * ... `:not(html|)` [1]
   * "*|a" gets serialized as "a" when it should not servo/servo#16020
     * test_selectors.html `reserialization of *|a` [6]
 * Unsupported pseudo-elements or anon boxes
   * :-moz-tree bits bug 1348488