diff --git a/tests/docs/smoke-all/2026/10/19/issue-14917/about.qmd b/tests/docs/smoke-all/2026/10/19/issue-14917/about.qmd
index aa3ac0d7d7..921034b96e 100644
--- a/tests/docs/smoke-all/2026/10/19/issue-14917/about.qmd
+++ b/tests/docs/smoke-all/2026/10/19/issue-14917/about.qmd
@@ -23,6 +23,8 @@ _quarto:
           - 'meta[name="twitter:title"][content="DECOY TITLE"]'
           - 'meta[name="twitter:description"][content="DECOY DESCRIPTION"]'
           - 'meta[property="og:title"][content^="About"]'
+          - 'meta[property="og:description"][content="About page description"]'
+          - 'meta[name="twitter:title"][content^="About"]'
           - 'meta[name="twitter:description"][content="About page description"]'
         - ['meta[property="og:site_name"][content="SITE TITLE"]']
 ---
diff --git a/tests/docs/smoke-all/2026/10/19/issue-14917/markdown-site-name.qmd b/tests/docs/smoke-all/2026/10/19/issue-14917/markdown-site-name.qmd
new file mode 100644
index 0000000000..452a10e8c0
--- /dev/null
+++ b/tests/docs/smoke-all/2026/10/19/issue-14917/markdown-site-name.qmd
@@ -0,0 +1,12 @@
+---
+title: "Summary"
+open-graph:
+  site-name: "**Bold** {{< meta title >}} name"
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        - ['meta[property="og:site_name"][content="Bold Summary name"]']
+---
+
+An explicit `open-graph.site-name` containing Markdown and a shortcode must reach `og:site_name` as rendered plain text.
diff --git a/tests/docs/smoke-all/2026/10/19/issue-14917/opt-out.qmd b/tests/docs/smoke-all/2026/10/19/issue-14917/opt-out.qmd
index fb9d40d325..3bebdc4a25 100644
--- a/tests/docs/smoke-all/2026/10/19/issue-14917/opt-out.qmd
+++ b/tests/docs/smoke-all/2026/10/19/issue-14917/opt-out.qmd
@@ -9,6 +9,8 @@ format:
           <meta property="og:site_name" content="PAGE SITE NAME">
           <meta property="og:title" content="PAGE TITLE">
           <meta name="twitter:title" content="PAGE TITLE">
+          <meta property="og:description" content="PAGE DESCRIPTION">
+          <meta name="twitter:description" content="PAGE DESCRIPTION">
 _quarto:
   tests:
     html:
@@ -16,6 +18,8 @@ _quarto:
         - - 'meta[property="og:site_name"][content="PAGE SITE NAME"]'
           - 'meta[property="og:title"][content="PAGE TITLE"]'
           - 'meta[name="twitter:title"][content="PAGE TITLE"]'
+          - 'meta[property="og:description"][content="PAGE DESCRIPTION"]'
+          - 'meta[name="twitter:description"][content="PAGE DESCRIPTION"]'
         - ['meta[property="og:site_name"][content="SITE TITLE"]']
 ---