diff --git a/static/js/app/58-pdf.js b/static/js/app/58-pdf.js
index 8fdd59e..5e7c99b 100644
--- a/static/js/app/58-pdf.js
+++ b/static/js/app/58-pdf.js
@@ -630,7 +630,11 @@ async function renderPdf(arrayBuffer, contentEl, scaleOverride, pivotPage) {
     return _pdfResult(pdf, extras);
   }
 
-  if (pivot > 1) entries[pivot - 1].wrapper.scrollIntoView({block: 'start'});
+  // Opening at the saved page is no "scrolled far" (44-books.js).
+  if (pivot > 1) {
+    if (typeof _suppressScrollJumpDetect === 'function') _suppressScrollJumpDetect();
+    entries[pivot - 1].wrapper.scrollIntoView({block: 'start'});
+  }
   pdfCurrentPage = pivot;
 
   const byEl = new Map(entries.map(e => [e.wrapper, e]));
diff --git a/static/js/sw.js b/static/js/sw.js
index e617f7f..711116c 100644
--- a/static/js/sw.js
+++ b/static/js/sw.js
@@ -2,7 +2,7 @@
  * diora service worker — caches the app shell for offline use.
  */
 
-const CACHE = 'diora-v167';
+const CACHE = 'diora-v168';
 const SHELL = [
   '/static/css/app.css',
   '/static/js/app/01-core.js',