diff --git a/tests/playwright/demo-interactions.spec.js b/tests/playwright/demo-interactions.spec.js
index 43229ca8..550d2cca 100644
--- a/tests/playwright/demo-interactions.spec.js
+++ b/tests/playwright/demo-interactions.spec.js
@@ -203,7 +203,7 @@ test.describe('Marshes interactions', () => {
     if (await btn.count() > 0) {
       const textBefore = await el.textContent();
       await btn.click();
-      await page.waitForTimeout(2000);
+      await page.waitForTimeout(4000);
       expect(await el.textContent()).not.toBe(textBefore);
     }
     await assertNoClassLeak(page, '[data-sx-island*="marsh-settle"]');
@@ -215,18 +215,33 @@ test.describe('Marshes interactions', () => {
     const reader = island(page, 'marsh-store-reader');
     await expect(writer).toBeVisible({ timeout: 10000 });
     await expect(reader).toBeVisible({ timeout: 10000 });
+    // Click a price button and verify cross-island signal propagation
+    const priceBtn = writer.locator('button').first();
+    if (await priceBtn.count() > 0) {
+      const readerBefore = await reader.textContent();
+      await priceBtn.click();
+      await page.waitForTimeout(500);
+      const readerAfter = await reader.textContent();
+      expect(readerAfter).not.toBe(readerBefore);
+    }
   });
 
   test('view-transform: view toggle changes rendering', async ({ page }) => {
     await loadPage(page, '(geography.(marshes.view-transform))');
     const el = island(page, 'marsh-view-transform');
     await expect(el).toBeVisible({ timeout: 10000 });
+    // Fetch catalog first — view toggle only changes rendering of loaded items
+    const fetchBtn = el.locator('button:has-text("Fetch Catalog")');
+    if (await fetchBtn.count() > 0) {
+      await fetchBtn.click();
+      await page.waitForTimeout(4000);
+    }
     const viewBtns = el.locator('button');
     if (await viewBtns.count() >= 2) {
-      const htmlBefore = await el.innerHTML();
+      const textBefore = await el.textContent();
       await viewBtns.nth(1).click();
-      await page.waitForTimeout(300);
-      expect(await el.innerHTML()).not.toBe(htmlBefore);
+      await page.waitForTimeout(500);
+      expect(await el.textContent()).not.toBe(textBefore);
     }
   });
 });