Fix borked appbar shadow

packages/gallery/src/interface/allImages.js

@@ -124,6 +124,10 @@ export function AllImagesView(vm, params, key, { appbar }) {
 		}
 	}
 
+	function handleContentScroll(evt) {
+		appbar.companionScrollTop(evt.target.scrollTop);
+	}
+
 	function pushAppBarState() {
 		const up = selectMode()
 			? {
@@ -172,8 +176,7 @@ export function AllImagesView(vm, params, key, { appbar }) {
 	}
 
 	return function() {
-		return el(
-			'div',
+		return scrollView(
 			{
 				onclick: {
 					'.photoSelect .icon svg path': toggleSelect,
@@ -181,7 +184,8 @@ export function AllImagesView(vm, params, key, { appbar }) {
 					'.albumSelectButton .icon': toggleAll,
 					'.albumSelectButton .icon svg path': toggleAll,
 					'.photoOverlay': photoClick
-				}
+				},
+				onscroll: handleContentScroll
 			},
 			sections().map(renderSection)
 		);
@@ -194,3 +198,7 @@ const trashButtonContainer = styled(
 	},
 	CLICKABLE
 );
+
+const scrollView = styled({
+	overflow: 'scroll'
+});

packages/gallery/src/interface/components/appbar.js

@@ -40,10 +40,12 @@ export function AppBarView(vm, params, key, opts) {
 	}
 
 	function pushState(newState) {
+		companionScrollTop(0);
 		stateStack.unshift(Object.assign({ _seq: seq++ }, newState));
 	}
 
 	function popState(navigateTo) {
+		companionScrollTop(0);
 		stateStack.shift();
 		if (navigateTo) {
 			router.goto(navigateTo);

packages/gallery/src/interface/gallery.js

@@ -39,8 +39,7 @@ export function GalleryView(vm) {
 	function renderMain() {
 		return [
 			iv(appbar),
-			content(
-				{ onscroll: handleContentScroll },
+			content([
 				renderSwitch(
 					{
 						photos: [AllImagesView, {}, 'allImages', context],
@@ -48,7 +47,7 @@ export function GalleryView(vm) {
 					},
 					routeName()
 				)
-			)
+			])
 		];
 	}