fix: wip

packages/app-tests/e2e/pdf-viewer/pdf-viewer.spec.ts

@@ -262,8 +262,6 @@ test.describe('PDF Viewer Rendering', () => {
 
       await fileChooser.setFiles(path.join(__dirname, '../../../../assets/example.pdf'));
 
-      await page.waitForTimeout(2000);
-
       await page.getByRole('button', { name: 'Continue' }).click();
 
       await expect(page.locator(PDF_PAGE_SELECTOR).first()).toBeVisible({ timeout: 30_000 });

packages/lib/client-only/hooks/use-field-page-coords.ts

@@ -91,10 +91,19 @@ export const useFieldPageCoords = (
     const mutationObserver = new MutationObserver(() => {
       const $page = document.querySelector<HTMLElement>(pageSelector);
 
-      if ($page) {
-        calculateCoords();
-        attachResizeObserver($page);
+      if (!$page) {
+        return;
       }
+
+      // Only recalculate when the observed page element has changed (e.g. new
+      // element appeared after virtual list scroll). Skip when mutations are
+      // from elsewhere in the DOM and the page element is unchanged.
+      if ($page === observedElement) {
+        return;
+      }
+
+      calculateCoords();
+      attachResizeObserver($page);
     });
 
     mutationObserver.observe(document.body, {

packages/lib/client-only/hooks/use-page-renderer.ts

@@ -61,8 +61,8 @@ export const usePageRenderer = (renderFunction: RenderFunction, pageData: PageRe
   const imageProps = useMemo(
     (): React.ImgHTMLAttributes<HTMLImageElement> & Record<string, unknown> & { alt: '' } => ({
       className: PDF_VIEWER_PAGE_CLASSNAME,
-      width: `${Math.floor(scaledViewport.width)}px`,
-      height: `${Math.floor(scaledViewport.height)}px`,
+      width: Math.floor(scaledViewport.width),
+      height: Math.floor(scaledViewport.height),
       alt: '',
       onLoad: () => setRenderStatus('loaded'),
       // Purposely not using lazy here since we can use the virtual list overscan to let us prerender images.