diff --git a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
index d9816c7e54..fb25b93968 100644
--- a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
@@ -520,9 +520,15 @@ Optional<StyleProperty> ResolvedCSSStyleDeclaration::property(PropertyID propert
 
     if (!m_element->layout_node()) {
         auto style = m_element->document().style_computer().compute_style(const_cast<DOM::Element&>(*m_element));
+        // FIXME: This is a stopgap until we implement shorthand -> longhand conversion.
+        auto value = style->maybe_null_property(property_id);
+        if (!value) {
+            dbgln("FIXME: ResolvedCSSStyleDeclaration::property(property_id=0x{:x}) No value for property ID in newly computed style case.", to_underlying(property_id));
+            return {};
+        }
         return StyleProperty {
             .property_id = property_id,
-            .value = style->property(property_id),
+            .value = value.release_nonnull(),
         };
     }
 
diff --git a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
index 84028bdd9a..96ebd559e7 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
@@ -44,6 +44,11 @@ NonnullRefPtr<StyleValue> StyleProperties::property(CSS::PropertyID property_id)
     return value.release_nonnull();
 }
 
+RefPtr<StyleValue> StyleProperties::maybe_null_property(CSS::PropertyID property_id) const
+{
+    return m_property_values[to_underlying(property_id)];
+}
+
 CSS::Size StyleProperties::size_value(CSS::PropertyID id) const
 {
     auto value = property(id);
diff --git a/Userland/Libraries/LibWeb/CSS/StyleProperties.h b/Userland/Libraries/LibWeb/CSS/StyleProperties.h
index 63c44f4fb7..33be113427 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleProperties.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleProperties.h
@@ -40,6 +40,7 @@ public:
 
     void set_property(CSS::PropertyID, NonnullRefPtr<StyleValue> value);
     NonnullRefPtr<StyleValue> property(CSS::PropertyID) const;
+    RefPtr<StyleValue> maybe_null_property(CSS::PropertyID) const;
 
     CSS::Size size_value(CSS::PropertyID) const;
     Length length_or_fallback(CSS::PropertyID, Length const& fallback) const;