diff --git a/components/layout_2020/flow/construct.rs b/components/layout_2020/flow/construct.rs
index 57d7bf9dd319..07dd6f9765bc 100644
--- a/components/layout_2020/flow/construct.rs
+++ b/components/layout_2020/flow/construct.rs
@@ -449,7 +449,7 @@ where
             let box_ = Arc::new(InlineLevelBox::OutOfFlowAbsolutelyPositionedBox(
                 AbsolutelyPositionedBox {
                     contents: IndependentFormattingContext::construct(
-                        unimplemented!(),
+                        self.context,
                         style,
                         display_inside,
                         contents,
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/box-display/containing-block-007.xht.ini b/tests/wpt/metadata-layout-2020/css/CSS2/box-display/containing-block-007.xht.ini
deleted file mode 100644
index b8731bb917c0..000000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/box-display/containing-block-007.xht.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[containing-block-007.xht]
-  expected: CRASH