diff --git a/packages/dashboard/app/components/GitHubImportModal.css b/packages/dashboard/app/components/GitHubImportModal.css
index 588e3e7610..5b671b3dec 100644
--- a/packages/dashboard/app/components/GitHubImportModal.css
+++ b/packages/dashboard/app/components/GitHubImportModal.css
@@ -777,6 +777,9 @@
   }
 
   .github-import-modal__body {
+    flex: 1;
+    min-height: 0;
+    overflow: hidden;
     padding: var(--space-md);
     gap: var(--space-md);
   }
@@ -844,6 +847,12 @@
     max-height: 50vh;
   }
 
+  .github-import-workspace {
+    flex: 1;
+    min-height: 0;
+    overflow: hidden;
+  }
+
   /* Mobile pane visibility - show one at a time */
   .github-import-list-pane.mobile {
     display: none;
@@ -864,7 +873,16 @@
   .github-import-preview-pane.mobile.active {
     display: flex;
     flex: 1;
+    min-height: 0;
     max-height: none;
+    overflow: hidden;
+  }
+
+  .github-import-preview-pane.mobile.active .github-import-pane-content {
+    flex: 1;
+    min-height: 0;
+    overflow-y: auto;
+    overscroll-behavior: contain;
   }
 
   /* Back button styles */
diff --git a/packages/dashboard/app/components/GitHubImportModal.tsx b/packages/dashboard/app/components/GitHubImportModal.tsx
index 11528586cc..3ef7233dd4 100644
--- a/packages/dashboard/app/components/GitHubImportModal.tsx
+++ b/packages/dashboard/app/components/GitHubImportModal.tsx
@@ -39,6 +39,16 @@ function clampListPaneWidth(width: number) {
   return Math.max(GITHUB_IMPORT_LIST_PANE_MIN_WIDTH, Math.min(GITHUB_IMPORT_LIST_PANE_MAX_WIDTH, width));
 }
 
+function formatPreviewBody(body: string | null | undefined, isMobile: boolean) {
+  if (!body) {
+    return null;
+  }
+  if (isMobile) {
+    return body;
+  }
+  return body.slice(0, 200) + (body.length > 200 ? "…" : "");
+}
+
 export function GitHubImportModal({ isOpen, onClose, onImport, tasks, projectId }: GitHubImportModalProps) {
   useMobileScrollLock(isOpen);
   const { t } = useTranslation("app");
@@ -797,9 +807,7 @@ export function GitHubImportModal({ isOpen, onClose, onImport, tasks, projectId
                     <div className="preview-meta">{t("git.previewIssueMeta", "Issue #{{number}}", { number: selectedIssue.number })}</div>
                     <div className="preview-title">{selectedIssue.title}</div>
                     <div className="preview-body">
-                      {selectedIssue.body
-                        ? selectedIssue.body.slice(0, 200) + (selectedIssue.body.length > 200 ? "…" : "")
-                        : t("git.noDescription", "(no description)")}
+                      {formatPreviewBody(selectedIssue.body, isMobile) || t("git.noDescription", "(no description)")}
                     </div>
                   </div>
                 ) : activeTab === "issues" ? (
@@ -820,9 +828,7 @@ export function GitHubImportModal({ isOpen, onClose, onImport, tasks, projectId
                       <strong>{t("git.branchLabel", "Branch:")}</strong> {selectedPull.headBranch} → {selectedPull.baseBranch}
                     </div>
                     <div className="preview-body">
-                      {selectedPull.body
-                        ? selectedPull.body.slice(0, 200) + (selectedPull.body.length > 200 ? "…" : "")
-                        : t("git.noDescription", "(no description)")}
+                      {formatPreviewBody(selectedPull.body, isMobile) || t("git.noDescription", "(no description)")}
                     </div>
                   </div>
                 ) : activeTab === "pulls" ? (
diff --git a/packages/dashboard/app/components/__tests__/GitHubImportModal.test.tsx b/packages/dashboard/app/components/__tests__/GitHubImportModal.test.tsx
index 78c9dec90a..d8d501e5db 100644
--- a/packages/dashboard/app/components/__tests__/GitHubImportModal.test.tsx
+++ b/packages/dashboard/app/components/__tests__/GitHubImportModal.test.tsx
@@ -83,6 +83,12 @@ describe("GitHubImportModal", () => {
     expect(source).toContain("Some hardcoded colors below");
   });
 
+  it("keeps mobile preview content vertically scrollable inside the active pane", () => {
+    const source = readFileSync(resolve(__dirname, "../GitHubImportModal.css"), "utf8");
+    expect(source).toContain(".github-import-preview-pane.mobile.active {\n    display: flex;\n    flex: 1;\n    min-height: 0;\n    max-height: none;\n    overflow: hidden;");
+    expect(source).toContain(".github-import-preview-pane.mobile.active .github-import-pane-content {\n    flex: 1;\n    min-height: 0;\n    overflow-y: auto;\n    overscroll-behavior: contain;");
+  });
+
   beforeEach(() => {
     vi.clearAllMocks();
     vi.mocked(fetchGitRemotes).mockReset();
@@ -183,6 +189,30 @@ describe("GitHubImportModal", () => {
     expect(screen.queryByTestId("github-import-preview-empty")).toBeNull();
   });
 
+  it("preserves the no-description fallback for empty and null issue bodies", async () => {
+    const issues = [
+      { number: 1, title: "Empty Issue", body: "", html_url: "https://github.com/owner/repo/issues/1", labels: [] },
+      { number: 2, title: "Null Issue", body: null, html_url: "https://github.com/owner/repo/issues/2", labels: [] },
+    ];
+    vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
+    vi.mocked(apiFetchGitHubIssues).mockResolvedValueOnce(issues);
+
+    render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
+
+    await waitFor(() => {
+      expect(screen.getByText("Empty Issue")).toBeTruthy();
+      expect(screen.getByText("Null Issue")).toBeTruthy();
+    });
+
+    fireEvent.click(screen.getByRole("radio", { name: /Select issue #1/i }));
+    let previewCard = await screen.findByTestId("github-import-preview-card");
+    expect(within(previewCard).getByText("(no description)")).toBeTruthy();
+
+    fireEvent.click(screen.getByRole("radio", { name: /Select issue #2/i }));
+    previewCard = await screen.findByTestId("github-import-preview-card");
+    expect(within(previewCard).getByText("(no description)")).toBeTruthy();
+  });
+
   it("has optional labels input with filter placeholder", async () => {
     vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
     render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
@@ -662,6 +692,136 @@ describe("GitHubImportModal", () => {
       expect(previewPane.classList.contains("active")).toBe(false);
     });
 
+    it("renders long selected issue body in full on mobile without a truncation ellipsis", async () => {
+      Object.defineProperty(window, "innerWidth", {
+        writable: true,
+        configurable: true,
+        value: 480,
+      });
+
+      const beyondPreviousCutoff = "visible body text after the old cutoff";
+      const longBody = `${"A".repeat(210)} ${beyondPreviousCutoff}`;
+      const issues = [
+        { number: 1, title: "Long Issue", body: longBody, html_url: "https://github.com/owner/repo/issues/1", labels: [] },
+      ];
+      vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
+      vi.mocked(apiFetchGitHubIssues).mockResolvedValueOnce(issues);
+
+      render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
+
+      await waitFor(() => {
+        expect(screen.getByText("Long Issue")).toBeTruthy();
+      });
+
+      fireEvent.click(screen.getByRole("radio", { name: /Select issue #1/i }));
+
+      const previewPane = screen.getByTestId("github-import-preview-pane");
+      await waitFor(() => {
+        expect(previewPane.classList.contains("active")).toBe(true);
+      });
+
+      const previewCard = await screen.findByTestId("github-import-preview-card");
+      expect(within(previewCard).getByText((content) => content.includes(beyondPreviousCutoff))).toBeTruthy();
+      expect(previewCard.textContent).toContain(longBody);
+      expect(previewCard.textContent).not.toContain(`${"A".repeat(200)}…`);
+    });
+
+    it("renders long selected pull request body in full on mobile without a truncation ellipsis", async () => {
+      Object.defineProperty(window, "innerWidth", {
+        writable: true,
+        configurable: true,
+        value: 480,
+      });
+
+      const beyondPreviousCutoff = "visible pull request body text after the old cutoff";
+      const longBody = `${"P".repeat(210)} ${beyondPreviousCutoff}`;
+      const pulls = [
+        { number: 1, title: "Long PR", body: longBody, html_url: "https://github.com/owner/repo/pull/1", headBranch: "feature", baseBranch: "main" },
+      ];
+      vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
+      vi.mocked(apiFetchGitHubPulls).mockResolvedValueOnce(pulls);
+
+      render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
+
+      fireEvent.click(await screen.findByRole("tab", { name: /Pull Requests/i }));
+
+      await waitFor(() => {
+        expect(screen.getByText("Long PR")).toBeTruthy();
+      });
+
+      fireEvent.click(screen.getByRole("radio", { name: /Select pull request #1/i }));
+
+      const previewPane = screen.getByTestId("github-import-preview-pane");
+      await waitFor(() => {
+        expect(previewPane.classList.contains("active")).toBe(true);
+      });
+
+      const previewCard = await screen.findByTestId("github-import-preview-card");
+      expect(within(previewCard).getByText((content) => content.includes(beyondPreviousCutoff))).toBeTruthy();
+      expect(previewCard.textContent).toContain(longBody);
+      expect(previewCard.textContent).not.toContain(`${"P".repeat(200)}…`);
+    });
+
+    it("truncates long selected issue body on desktop", async () => {
+      Object.defineProperty(window, "innerWidth", {
+        writable: true,
+        configurable: true,
+        value: 1200,
+      });
+
+      const beyondDesktopCutoff = "desktop issue text after the cutoff";
+      const longBody = `${"I".repeat(210)} ${beyondDesktopCutoff}`;
+      const issues = [
+        { number: 1, title: "Long Desktop Issue", body: longBody, html_url: "https://github.com/owner/repo/issues/1", labels: [] },
+      ];
+      vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
+      vi.mocked(apiFetchGitHubIssues).mockResolvedValueOnce(issues);
+
+      render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
+
+      await waitFor(() => {
+        expect(screen.getByText("Long Desktop Issue")).toBeTruthy();
+      });
+
+      fireEvent.click(screen.getByRole("radio", { name: /Select issue #1/i }));
+
+      const previewCard = await screen.findByTestId("github-import-preview-card");
+      expect(previewCard.textContent).toContain(`${"I".repeat(200)}…`);
+      expect(previewCard.textContent).not.toContain(beyondDesktopCutoff);
+      expect(previewCard.textContent).not.toContain(longBody);
+    });
+
+    it("truncates long selected pull request body on desktop", async () => {
+      Object.defineProperty(window, "innerWidth", {
+        writable: true,
+        configurable: true,
+        value: 1200,
+      });
+
+      const beyondDesktopCutoff = "desktop pull request text after the cutoff";
+      const longBody = `${"R".repeat(210)} ${beyondDesktopCutoff}`;
+      const pulls = [
+        { number: 1, title: "Long Desktop PR", body: longBody, html_url: "https://github.com/owner/repo/pull/1", headBranch: "feature", baseBranch: "main" },
+      ];
+      vi.mocked(fetchGitRemotes).mockResolvedValueOnce(singleRemote);
+      vi.mocked(apiFetchGitHubPulls).mockResolvedValueOnce(pulls);
+
+      render(<GitHubImportModal isOpen={true} onClose={onClose} onImport={onImport} tasks={[]} />);
+
+      fireEvent.click(await screen.findByRole("tab", { name: /Pull Requests/i }));
+
+      await waitFor(() => {
+        expect(screen.getByText("Long Desktop PR")).toBeTruthy();
+      });
+
+      fireEvent.click(screen.getByRole("radio", { name: /Select pull request #1/i }));
+
+      const previewCard = await screen.findByTestId("github-import-preview-card");
+      expect(previewCard.textContent).toContain(`${"R".repeat(200)}…`);
+      expect(previewCard.textContent).not.toContain(beyondDesktopCutoff);
+      expect(previewCard.textContent).not.toContain(longBody);
+    });
+
     it("returns to list view on mobile after successful import", async () => {
       Object.defineProperty(window, "innerWidth", {
         writable: true,