diff --git a/Libraries/LibWeb/DOM/Node.cpp b/Libraries/LibWeb/DOM/Node.cpp
index c794c510325..40718469da4 100644
--- a/Libraries/LibWeb/DOM/Node.cpp
+++ b/Libraries/LibWeb/DOM/Node.cpp
@@ -202,6 +202,10 @@ void Node::set_text_content(Optional<String> const& maybe_content)
 
     // If DocumentFragment or Element, string replace all with the given value within this.
     if (is<DocumentFragment>(this) || is<Element>(this)) {
+        // OPTIMIZATION: Replacing nothing with nothing is a no-op. Avoid all invalidation in this case.
+        if (!first_child() && content.is_empty()) {
+            return;
+        }
         string_replace_all(content);
     }
 
diff --git a/Libraries/LibWeb/DOM/Node.h b/Libraries/LibWeb/DOM/Node.h
index 5b97aafe0bc..c2b6c796eca 100644
--- a/Libraries/LibWeb/DOM/Node.h
+++ b/Libraries/LibWeb/DOM/Node.h
@@ -74,6 +74,7 @@ enum class IsDescendant {
     X(HTMLIFrameElementGeometryChange)              \
     X(HTMLInputElementSetChecked)                   \
     X(HTMLObjectElementUpdateLayoutAndChildObjects) \
+    X(HTMLOptionElementSelectedChange)              \
     X(HTMLSelectElementSetIsOpen)                   \
     X(Hover)                                        \
     X(MediaQueryChangedMatchState)                  \
diff --git a/Libraries/LibWeb/HTML/HTMLOptionElement.cpp b/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
index 8dc7be8a547..123edf60f8a 100644
--- a/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
@@ -68,6 +68,9 @@ void HTMLOptionElement::set_selected(bool selected)
 
 void HTMLOptionElement::set_selected_internal(bool selected)
 {
+    if (m_selected != selected)
+        invalidate_style(DOM::StyleInvalidationReason::HTMLOptionElementSelectedChange);
+
     m_selected = selected;
     if (selected)
         m_selectedness_update_index = m_next_selectedness_update_index++;