diff --git a/Tests/LibWeb/Text/expected/is-collapsed.txt b/Tests/LibWeb/Text/expected/is-collapsed.txt
new file mode 100644
index 00000000000..7ef22e9a431
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/is-collapsed.txt
@@ -0,0 +1 @@
+PASS
diff --git a/Tests/LibWeb/Text/input/is-collapsed.html b/Tests/LibWeb/Text/input/is-collapsed.html
new file mode 100644
index 00000000000..5a12704953d
--- /dev/null
+++ b/Tests/LibWeb/Text/input/is-collapsed.html
@@ -0,0 +1,27 @@
+<script src="include.js"></script>
+<p id="a">Simply selectable</p>
+
+<script>
+    test(() => {
+        var selection = window.getSelection();
+        var range = document.createRange();
+        range.setStart(a.firstChild, 0);
+        range.setEnd(a.firstChild, 1);
+        selection.addRange(range);
+        if (selection.isCollapsed) {
+            println(`FAIL: "${selection}" is not collapsed`);
+            return;
+        }
+        selection.collapseToStart();
+        if (!selection.isCollapsed) {
+            println(`FAIL: "${selection}" is collapsed`);
+            return;
+        }
+        selection.removeAllRanges();
+        if (!selection.isCollapsed) {
+            println(`FAIL: "${selection}" is collapsed`);
+            return;
+        }
+        println("PASS");
+    })
+</script>
diff --git a/Userland/Libraries/LibWeb/Selection/Selection.cpp b/Userland/Libraries/LibWeb/Selection/Selection.cpp
index e783a1533df..741a674228a 100644
--- a/Userland/Libraries/LibWeb/Selection/Selection.cpp
+++ b/Userland/Libraries/LibWeb/Selection/Selection.cpp
@@ -96,7 +96,10 @@ bool Selection::is_collapsed() const
 {
     // The attribute must return true if and only if the anchor and focus are the same
     // (including if both are null). Otherwise it must return false.
-    return const_cast<Selection*>(this)->anchor_node() == const_cast<Selection*>(this)->focus_node();
+    if (!m_range)
+        return true;
+    return const_cast<Selection*>(this)->anchor_node() == const_cast<Selection*>(this)->focus_node()
+        && m_range->start_offset() == m_range->end_offset();
 }
 
 // https://w3c.github.io/selection-api/#dom-selection-rangecount