Disconnect the resize observer and remove scroll listener when unbinding window events

web/pdf_viewer.js

@@ -309,7 +309,21 @@ class PDFViewer {
       this.renderingQueue = options.renderingQueue;
     }
 
-    this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this));
+    const { abortSignal } = options;
+    abortSignal?.addEventListener(
+      "abort",
+      () => {
+        this.#resizeObserver.disconnect();
+        this.#resizeObserver = null;
+      },
+      { once: true }
+    );
+
+    this.scroll = watchScroll(
+      this.container,
+      this._scrollUpdate.bind(this),
+      abortSignal
+    );
     this.presentationModeState = PresentationModeState.UNKNOWN;
     this._resetView();