diff --git a/web/pdf_page_view.js b/web/pdf_page_view.js
index 80b47fcf5..4cf99d3fe 100644
--- a/web/pdf_page_view.js
+++ b/web/pdf_page_view.js
@@ -1080,6 +1080,10 @@ class PDFPageView extends BasePDFPageView {
         );
       }
     ).then(async () => {
+      if (this.renderingState !== RenderingStates.FINISHED) {
+        // The rendering has been cancelled.
+        return;
+      }
       this.structTreeLayer ||= new StructTreeLayerBuilder(
         pdfPage,
         viewport.rawDims
diff --git a/web/pdf_viewer.js b/web/pdf_viewer.js
index 780c062be..4333d4c55 100644
--- a/web/pdf_viewer.js
+++ b/web/pdf_viewer.js
@@ -2525,6 +2525,8 @@ class PDFViewer {
       if (!isEditing) {
         this.pdfDocument.annotationStorage.resetModifiedIds();
       }
+      // We need to cleanup whatever pages being rendered.
+      this.cleanup();
       for (const pageView of this._pages) {
         pageView.toggleEditingMode(isEditing);
       }