diff --git a/tests/e2e/campaignActivity.e2e.spec.ts b/tests/e2e/campaignActivity.e2e.spec.ts
index e1a2f791..969d338e 100644
--- a/tests/e2e/campaignActivity.e2e.spec.ts
+++ b/tests/e2e/campaignActivity.e2e.spec.ts
@@ -218,13 +218,12 @@ test.describe('Agenda — calendário operacional', () => {
     )
     await expect(page.getByText(title, { exact: true })).toBeVisible()
 
-    // B167: when the viewport shrinks to mobile, a chat that was open on the
-    // desktop panel migrates to the open full-screen drawer — which would cover
-    // the agenda. Close it first so this mobile-layout step is unobstructed.
-    await page
+    // B203: fresh sessions start closed — close the chat only if it opened,
+    // so the mobile drawer never covers the agenda on resize.
+    const openChatClose = page
       .getByRole('button', { name: 'Fechar', exact: true })
       .filter({ visible: true })
-      .click()
+    if ((await openChatClose.count()) > 0) await openChatClose.click()
     await page.setViewportSize({ width: 390, height: 844 })
     // C95 — the view-mode control lives in the app top bar on mobile too; the
     // narrow fallback (no `view` param) shows "Dia" after the resize.
@@ -478,13 +477,12 @@ test.describe('Agenda — calendário operacional', () => {
 
     // The explicit choice wins over the responsive narrow fallback: shrinking
     // the viewport must NOT push the calendar back to day/week.
-    // B167: a chat that opened by itself on the desktop panel (RRP settle)
-    // migrates to the full-screen mobile drawer and covers the page — close it
-    // first so the top bar selector stays reachable in the a11y tree.
-    await page
+    // B203: fresh sessions start closed — close the chat only if it opened,
+    // or the migrating drawer would cover the page on resize.
+    const openChatClose = page
       .getByRole('button', { name: 'Fechar', exact: true })
       .filter({ visible: true })
-      .click()
+    if ((await openChatClose.count()) > 0) await openChatClose.click()
     await page.setViewportSize({ width: 390, height: 844 })
     await expect(viewSelector).toHaveAttribute('aria-label', 'Modo de visualização: Mês')
     // C101 — the mobile calendar drops the FullCalendar toolbar: the period
diff --git a/tests/e2e/campaignMunicipalityResponsiveColumns.e2e.spec.ts b/tests/e2e/campaignMunicipalityResponsiveColumns.e2e.spec.ts
index 4343fd6a..e845fb73 100644
--- a/tests/e2e/campaignMunicipalityResponsiveColumns.e2e.spec.ts
+++ b/tests/e2e/campaignMunicipalityResponsiveColumns.e2e.spec.ts
@@ -1,6 +1,6 @@
 import type { Locator, Page } from '@playwright/test'
 
-import { expect, test } from './fixtures/campaignE2EFixtures.js'
+import { expect, test, waitForRouterSettled } from './fixtures/campaignE2EFixtures.js'
 
 const REM_IN_PIXELS = 16
 const municipalityColumnsCookie = encodeURIComponent('municipios:__none__')
@@ -166,6 +166,17 @@ test.describe('B158 — colunas responsivas por largura do conteúdo', () => {
     // would only prove that the container shrank, not that its query reacted.
     await page.setViewportSize({ width: 1600, height: 900 })
     await loginWithAllColumns(page, campaign)
+    // B203: fresh sessions start closed — open the chat explicitly so the
+    // stage below starts from the assumed "sidebar open + chat open" state.
+    // OPS42 — dev-only settle before the click (see `waitForRouterSettled`).
+    await waitForRouterSettled(page)
+    await page
+      .getByRole('button', { name: 'Sollinha — Assistente virtual' })
+      .filter({ visible: true })
+      .click()
+    await expect(
+      page.getByRole('button', { name: 'Fechar', exact: true }).filter({ visible: true }),
+    ).toBeVisible({ timeout: 20_000 })
     const container = municipalityContainer(page)
     const viewportBefore = page.viewportSize()
     const widthWithSidebar = await container.evaluate((element) => element.clientWidth)