fix(picker): scrolling issue inside overlays in Safari iPad

.changeset/fix-picker-overlay-scroll.md

@@ -0,0 +1,8 @@
+---
+'@spectrum-web-components/overlay': patch
+'@spectrum-web-components/picker': patch
+---
+
+**Fixed** issue where picker menus inside overlays could not scroll to the bottom after selecting an item and reopening. The problem was caused by the overlay's placement calculation happening before the menu fully rendered, resulting in incorrect height measurements.
+
+This fix ensures picker menus maintain proper scrollable height when reopened, regardless of the selected item's position.

1st-gen/packages/menu/src/Menu.ts

@@ -103,30 +103,30 @@ export class Menu extends SizedMixin(SpectrumElement, { noDefaultSize: true }) {
 
     /**
      * Minimum vertical movement (in pixels) required to trigger scrolling detection.
-     * 
+     *
      * This threshold is consistent with other components in the design system:
      * - Card component uses 10px for click vs. drag detection
      * - Menu component uses 10px for scroll vs. selection detection
-     * 
+     *
      * The 10px threshold is carefully chosen to:
      * - Allow for natural finger tremor and accidental touches
      * - Distinguish between intentional scroll gestures and taps
      * - Provide consistent behavior across the platform
-     * 
+     *
      * @see {@link packages/card/src/Card.ts} for similar threshold usage
      */
     private scrollThreshold = 10; // pixels
 
     /**
      * Maximum time (in milliseconds) for a movement to be considered scrolling.
-     * 
+     *
      * This threshold is consistent with other timing values in the design system:
      * - Longpress duration: 300ms (ActionButton, LongpressController)
      * - Scroll detection: 300ms (Menu component)
-     * 
+     *
      * Quick movements within this timeframe are likely intentional scrolls,
      * while slower movements are more likely taps or selections.
-     * 
+     *
      * @see {@link packages/action-button/src/ActionButton.ts} for longpress duration
      * @see {@link packages/overlay/src/LongpressController.ts} for longpress duration
      */
@@ -576,7 +576,7 @@ export class Menu extends SizedMixin(SpectrumElement, { noDefaultSize: true }) {
      * Resets the scrolling state after a short delay (100ms) to allow for
      * any final touch events to be processed. This delay prevents immediate
      * state changes that could interfere with the selection logic.
-     * 
+     *
      * The 100ms delay is consistent with the design system's approach to
      * touch event handling and ensures that any final touch events or
      * gesture recognition can complete before the scrolling state is reset.
@@ -720,7 +720,7 @@ export class Menu extends SizedMixin(SpectrumElement, { noDefaultSize: true }) {
     ): MenuItem {
         const diff = before ? -1 : 1;
         const elements = this.rovingTabindexController?.elements || [];
-        const index = !!menuItem ? elements.indexOf(menuItem) : -1;
+        const index = menuItem ? elements.indexOf(menuItem) : -1;
         let newIndex = Math.min(Math.max(0, index + diff), elements.length - 1);
         while (
             !this.isFocusableElement(elements[newIndex]) &&
@@ -729,7 +729,7 @@ export class Menu extends SizedMixin(SpectrumElement, { noDefaultSize: true }) {
         ) {
             newIndex += diff;
         }
-        return !!this.isFocusableElement(elements[newIndex])
+        return this.isFocusableElement(elements[newIndex])
             ? (elements[newIndex] as MenuItem)
             : menuItem || elements[0];
     }
@@ -1010,7 +1010,7 @@ export class Menu extends SizedMixin(SpectrumElement, { noDefaultSize: true }) {
                 }
             });
         }
-        if (!!this._updateFocus) {
+        if (this._updateFocus) {
             this.rovingTabindexController?.focusOnItem(this._updateFocus);
             this._updateFocus = undefined;
         }

1st-gen/packages/overlay/src/PlacementController.ts

@@ -24,6 +24,7 @@ import {
     shift,
     size,
 } from '@floating-ui/dom';
+import { isWebKit } from '@spectrum-web-components/shared';
 import type { VirtualTrigger } from './VirtualTrigger.js';
 import type { OpenableElement } from './overlay-types.js';
 import type { Overlay } from './Overlay.js';
@@ -278,6 +279,28 @@ export class PlacementController implements ReactiveController {
         // Wait for document fonts to be ready before computing placement.
         await (document.fonts ? document.fonts.ready : Promise.resolve());
 
+        // Safari/iOS-specific fix: Add small delay for picker menus to allow scrollIntoView to complete
+        // Check if this is a submenu overlay (slot="submenu")
+        // Submenus need immediate positioning for hover responsiveness
+        const isSubmenu = Array.from(this.host.elements).some(
+            (el) => el.getAttribute?.('slot') === 'submenu'
+        );
+
+        // Safari-specific timing fix covered by cross-browser integration tests
+        /* c8 ignore start */
+        if (isWebKit() && !isSubmenu) {
+            const hasMenu = Array.from(this.host.elements).some(
+                (el) =>
+                    el.tagName === 'SP-MENU' || el.querySelector?.('sp-menu')
+            );
+
+            if (hasMenu) {
+                // Wait 1 frame for Safari layout to settle after scrollIntoView
+                await new Promise((resolve) => requestAnimationFrame(resolve));
+            }
+        }
+        /* c8 ignore stop */
+
         // Determine the flip middleware based on the type of trigger element.
         const flipMiddleware = !(options.trigger instanceof HTMLElement)
             ? flip({

1st-gen/packages/overlay/test/overlay.test.ts

@@ -35,6 +35,8 @@ import {
 import { render, TemplateResult } from '@spectrum-web-components/base';
 import { Button } from '@spectrum-web-components/button';
 import { Menu } from '@spectrum-web-components/menu';
+import '@spectrum-web-components/menu/sp-menu.js';
+import '@spectrum-web-components/menu/sp-menu-item.js';
 import { Theme } from '@spectrum-web-components/theme';
 import '@spectrum-web-components/theme/sp-theme.js';
 import '@spectrum-web-components/theme/src/themes.js';
@@ -54,7 +56,7 @@ import {
     clickAndHoverTarget,
     definedOverlayElement,
     virtualElement,
-} from '../stories/overlay.stories';
+} from '../stories/overlay.stories.js';
 // import { isWebKit } from '@spectrum-web-components/shared';
 
 async function styledFixture<T extends Element>(
@@ -476,6 +478,7 @@ describe('Overlays', () => {
 
         const initial = el.getBoundingClientRect();
         trigger.updateBoundingClientRect(500, 500);
+        // Wait for placement computation to complete
         await nextFrame();
         await nextFrame();
         const final = el.getBoundingClientRect();