diff --git a/packages/app/e2e/regression/new-session-panel-corner.spec.ts b/packages/app/e2e/regression/new-session-panel-corner.spec.ts
new file mode 100644
index 0000000000..a17b8c0817
--- /dev/null
+++ b/packages/app/e2e/regression/new-session-panel-corner.spec.ts
@@ -0,0 +1,83 @@
+import { expect, test } from "@playwright/test"
+import { mockOpenCodeServer } from "../utils/mock-server"
+import { expectAppVisible } from "../utils/waits"
+
+const draftID = "draft_new_session_panel_corner"
+const directory = "C:/OpenCode/NewSessionPanelCorner"
+const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
+
+test.use({
+  viewport: { width: 935, height: 522 },
+  deviceScaleFactor: 1,
+})
+
+test("matches the rounded panel corners to the dark new-session background", async ({ page }, testInfo) => {
+  await mockOpenCodeServer(page, {
+    directory,
+    project: {
+      id: "proj_new_session_panel_corner",
+      worktree: directory,
+      vcs: "git",
+      name: "new-session-panel-corner",
+      time: { created: 1700000000000, updated: 1700000000000 },
+      sandboxes: [],
+    },
+    provider: { all: [], connected: [], default: {} },
+    sessions: [],
+    pageMessages: () => ({ items: [] }),
+  })
+  await page.addInitScript(
+    ({ directory, draftID, server }) => {
+      localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
+      localStorage.setItem("opencode-theme-id", "oc-2")
+      localStorage.setItem("opencode-color-scheme", "dark")
+      localStorage.setItem(
+        "opencode.global.dat:server",
+        JSON.stringify({
+          projects: { local: [{ worktree: directory, expanded: true }] },
+          lastProject: { local: directory },
+        }),
+      )
+      localStorage.setItem(
+        "opencode.window.browser.dat:tabs",
+        JSON.stringify([{ type: "draft", draftID, server, directory }]),
+      )
+    },
+    { directory, draftID, server },
+  )
+
+  await page.goto(`/new-session?draftId=${draftID}`)
+  await expectAppVisible(page.locator('[data-component="prompt-input"]'))
+  await expect(page.locator("html")).toHaveAttribute("data-color-scheme", "dark")
+  const panel = page.locator('main div[class*="rounded-[10px]"][class*="overflow-hidden"]')
+  await expect(panel).toHaveCount(1)
+  const box = await panel.boundingBox()
+  if (!box) throw new Error("New-session panel bounds are unavailable")
+
+  const screenshot = await page.screenshot({ path: testInfo.outputPath("new-session-dark.png") })
+  const corners = await page.evaluate(
+    async ({ source, points }) => {
+      const image = new Image()
+      image.src = source
+      await image.decode()
+      const canvas = document.createElement("canvas")
+      canvas.width = image.naturalWidth
+      canvas.height = image.naturalHeight
+      const context = canvas.getContext("2d")
+      if (!context) throw new Error("2D canvas is unavailable")
+      context.drawImage(image, 0, 0)
+      return points.map((point) => Array.from(context.getImageData(point.x, point.y, 1, 1).data))
+    },
+    {
+      source: `data:image/png;base64,${screenshot.toString("base64")}`,
+      points: [
+        { x: Math.floor(box.x), y: Math.floor(box.y) },
+        { x: Math.ceil(box.x + box.width) - 1, y: Math.floor(box.y) },
+        { x: Math.floor(box.x), y: Math.ceil(box.y + box.height) - 1 },
+        { x: Math.ceil(box.x + box.width) - 1, y: Math.ceil(box.y + box.height) - 1 },
+      ],
+    },
+  )
+
+  expect(corners.every(([red, green, blue, alpha]) => red <= 8 && green <= 8 && blue <= 8 && alpha === 255)).toBe(true)
+})
diff --git a/packages/app/e2e/tsconfig.json b/packages/app/e2e/tsconfig.json
index d273d2b35e..53aacbda02 100644
--- a/packages/app/e2e/tsconfig.json
+++ b/packages/app/e2e/tsconfig.json
@@ -10,6 +10,7 @@
     "./performance/timeline-stability/fixture.test.ts",
     "./performance/timeline-stability/fixture.ts",
     "./performance/unit/visual-stability.test.ts",
+    "./regression/new-session-panel-corner.spec.ts",
     "./regression/session-timeline-context-resize.spec.ts",
     "./utils/**/*.ts"
   ]
diff --git a/packages/app/src/pages/new-session.tsx b/packages/app/src/pages/new-session.tsx
index 9097ea4165..af53ca3d4c 100644
--- a/packages/app/src/pages/new-session.tsx
+++ b/packages/app/src/pages/new-session.tsx
@@ -93,7 +93,7 @@ export default function NewSessionPage() {
   return (
     <div class="relative size-full overflow-hidden flex flex-col">
       <div class="flex-1 min-h-0 flex flex-col gap-2 p-2">
-        <div class="@container relative flex flex-col min-h-0 h-full bg-background-stronger flex-1">
+        <div class="@container relative flex flex-col min-h-0 h-full flex-1">
           <div class="flex-1 min-h-0 overflow-hidden rounded-[10px]">
             <NewSessionDesignView>
               <div class={NEW_SESSION_CONTENT_WIDTH}>