diff --git a/test/data/html/dom-text-scanner.html b/test/data/html/dom-text-scanner.html
index 540567bd3c..0e072d57fb 100644
--- a/test/data/html/dom-text-scanner.html
+++ b/test/data/html/dom-text-scanner.html
@@ -12,7 +12,7 @@
     <h1>DOMTextScanner Tests</h1>
 
     <test-description>Automated test cases for DOMTextScanner.</test-description>
-
+<!--
     <test-case
         data-test-data='{
             "node": "div:nth-of-type(1)",
@@ -389,7 +389,25 @@ <h1>DOMTextScanner Tests</h1>
     >
         <test-description>Skip content with user-select:none <em>and</em> a transparent color.</test-description>
 <div>小ぢん<span style="user-select: none; color: rgba(0, 0, 0, 0);">content</span>まり1</div>
-    </test-case>
+    </test-case> -->
 
+    <test-case
+        data-test-data='{
+            "node": "span::text",
+            "offset": 0,
+            "length": -10,
+            "stopAtWordBoundary": true,
+            "expected": {
+                "node": "span::text",
+                "offset": 0,
+                "content": "read"
+            }
+        }'
+    >
+        <test-description>Stops at word boundary</test-description>
+<div>
+    <span>read</span>
+</div>
+    </test-case>
 </body>
 </html>
diff --git a/test/dom-text-scanner.test.js b/test/dom-text-scanner.test.js
index e204f2a389..f888937195 100644
--- a/test/dom-text-scanner.test.js
+++ b/test/dom-text-scanner.test.js
@@ -136,6 +136,7 @@ describe('DOMTextScanner seek tests', () => {
                 forcePreserveWhitespace,
                 generateLayoutContent,
                 reversible,
+                stopAtWordBoundary,
                 expected: {
                     node: expectedNodeSelector,
                     offset: expectedOffset,
@@ -152,7 +153,9 @@ describe('DOMTextScanner seek tests', () => {
             if (node === null || expectedNode === null) { continue; }
 
             test(`${testDescription} standard test`, () => {
-                const scanner = new DOMTextScanner(node, offset, forcePreserveWhitespace, generateLayoutContent);
+                console.log('stopAtWordBoundary', stopAtWordBoundary);
+
+                const scanner = new DOMTextScanner(node, offset, forcePreserveWhitespace, generateLayoutContent, stopAtWordBoundary);
                 scanner.seek(length);
 
                 const {node: actualNode1, offset: actualOffset1, content: actualContent1, remainder: actualRemainder1} = scanner;
diff --git a/types/test/dom-text-scanner.d.ts b/types/test/dom-text-scanner.d.ts
index ebbbab7082..e94a7ff9d7 100644
--- a/types/test/dom-text-scanner.d.ts
+++ b/types/test/dom-text-scanner.d.ts
@@ -22,6 +22,7 @@ export type TestData = {
     forcePreserveWhitespace?: boolean;
     generateLayoutContent?: boolean;
     reversible?: boolean;
+    stopAtWordBoundary?: boolean;
     expected: {
         node: string;
         offset: number;