diff --git a/server/src/__tests__/issues-list-include-blocked-by-routes.test.ts b/server/src/__tests__/issues-list-include-blocked-by-routes.test.ts
new file mode 100644
index 00000000..151b5de3
--- /dev/null
+++ b/server/src/__tests__/issues-list-include-blocked-by-routes.test.ts
@@ -0,0 +1,167 @@
+import express from "express";
+import request from "supertest";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const mockList = vi.hoisted(() => vi.fn());
+const mockIssueService = vi.hoisted(() => ({
+  list: mockList,
+  getById: vi.fn(),
+  getByIdentifier: vi.fn(async () => null),
+  getComment: vi.fn(),
+  getCommentCursor: vi.fn(async () => ({
+    totalComments: 0,
+    latestCommentId: null,
+    latestCommentAt: null,
+  })),
+  getRelationSummaries: vi.fn(),
+  update: vi.fn(),
+  getAncestors: vi.fn(async () => []),
+  listWakeableBlockedDependents: vi.fn(async () => []),
+  getWakeableParentAfterChildCompletion: vi.fn(async () => null),
+  findMentionedAgents: vi.fn(async () => []),
+}));
+
+vi.mock("../services/index.js", async () => {
+  const actual = await vi.importActual<typeof import("../services/index.js")>(
+    "../services/index.js",
+  );
+  return {
+    ...actual,
+    companyService: () => ({
+      getById: vi.fn(async () => ({ id: "company-1", attachmentMaxBytes: 10 * 1024 * 1024 })),
+    }),
+    accessService: () => ({
+      canUser: vi.fn(),
+      hasPermission: vi.fn(),
+    }),
+    agentService: () => ({
+      getById: vi.fn(),
+    }),
+    documentAnnotationService: () => ({ remapOpenThreadsForDocument: async () => [] }),
+    documentService: () => ({
+      getIssueDocumentPayload: vi.fn(async () => ({})),
+    }),
+    executionWorkspaceService: () => ({
+      getById: vi.fn(),
+    }),
+    feedbackService: () => ({}),
+    goalService: () => ({
+      getById: vi.fn(),
+      getDefaultCompanyGoal: vi.fn(),
+    }),
+    heartbeatService: () => ({
+      wakeup: vi.fn(async () => undefined),
+      reportRunActivity: vi.fn(async () => undefined),
+    }),
+    instanceSettingsService: () => ({
+      get: vi.fn(),
+      listCompanyIds: vi.fn(),
+    }),
+    issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
+    issueRecoveryActionService: () => ({
+      getActiveForIssue: vi.fn(async () => null),
+      listActiveForIssues: vi.fn(async () => new Map()),
+    }),
+    issueThreadInteractionService: () => ({
+      listForIssue: vi.fn(async () => []),
+      expireRequestConfirmationsSupersededByComment: vi.fn(async () => []),
+      expireStaleRequestConfirmationsForIssueDocument: vi.fn(async () => []),
+    }),
+    issueService: () => mockIssueService,
+    projectService: () => ({
+      getById: vi.fn(),
+      listByIds: vi.fn(async () => []),
+    }),
+    routineService: () => ({
+      syncRunStatusForIssue: vi.fn(async () => undefined),
+    }),
+    workProductService: () => ({
+      listForIssue: vi.fn(async () => []),
+    }),
+  };
+});
+
+async function createApp() {
+  const [{ issueRoutes }, { errorHandler }] = await Promise.all([
+    vi.importActual<typeof import("../routes/issues.js")>("../routes/issues.js"),
+    vi.importActual<typeof import("../middleware/index.js")>("../middleware/index.js"),
+  ]);
+  const app = express();
+  app.use(express.json());
+  app.use((req, _res, next) => {
+    (req as any).actor = {
+      type: "board",
+      userId: "local-board",
+      companyIds: ["company-1"],
+      memberships: [{ companyId: "company-1", membershipRole: "owner", status: "active" }],
+      source: "local_implicit",
+      isInstanceAdmin: false,
+    };
+    next();
+  });
+  app.use("/api", issueRoutes({} as any, {} as any));
+  app.use(errorHandler);
+  return app;
+}
+
+describe("GET /companies/:companyId/issues includeBlockedBy default", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    vi.doUnmock("../routes/issues.js");
+    vi.doUnmock("../routes/authz.js");
+    vi.doUnmock("../middleware/index.js");
+    vi.clearAllMocks();
+    mockList.mockResolvedValue([]);
+  });
+
+  it("defaults includeBlockedBy to true so list responses are consistent with GET /api/issues/:id", async () => {
+    const res = await request(await createApp()).get("/api/companies/company-1/issues");
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockList).toHaveBeenCalledTimes(1);
+    const callArgs = mockList.mock.calls[0]?.[1] ?? {};
+    expect(callArgs).toMatchObject({ includeBlockedBy: true });
+  });
+
+  it("defaults includeBlockedBy to true when the status filter is blocked (GRO-2096 regression guard)", async () => {
+    const res = await request(await createApp())
+      .get("/api/companies/company-1/issues")
+      .query({ status: "blocked" });
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockList).toHaveBeenCalledTimes(1);
+    const callArgs = mockList.mock.calls[0]?.[1] ?? {};
+    expect(callArgs).toMatchObject({ status: "blocked", includeBlockedBy: true });
+  });
+
+  it("opts out of includeBlockedBy when the caller passes ?includeBlockedBy=false", async () => {
+    const res = await request(await createApp())
+      .get("/api/companies/company-1/issues")
+      .query({ includeBlockedBy: "false" });
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockList).toHaveBeenCalledTimes(1);
+    const callArgs = mockList.mock.calls[0]?.[1] ?? {};
+    expect(callArgs).toMatchObject({ includeBlockedBy: false });
+  });
+
+  it("opts out of includeBlockedBy when the caller passes ?includeBlockedBy=0", async () => {
+    const res = await request(await createApp())
+      .get("/api/companies/company-1/issues")
+      .query({ includeBlockedBy: "0" });
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockList).toHaveBeenCalledTimes(1);
+    const callArgs = mockList.mock.calls[0]?.[1] ?? {};
+    expect(callArgs).toMatchObject({ includeBlockedBy: false });
+  });
+});
diff --git a/server/src/routes/issues.ts b/server/src/routes/issues.ts
index b2f2d872..650893bc 100644
--- a/server/src/routes/issues.ts
+++ b/server/src/routes/issues.ts
@@ -1944,7 +1944,9 @@ export function issueRoutes(
         req.query.excludeRoutineExecutions === "true" || req.query.excludeRoutineExecutions === "1",
       includePluginOperations:
         req.query.includePluginOperations === "true" || req.query.includePluginOperations === "1",
-      includeBlockedBy: req.query.includeBlockedBy === "true" || req.query.includeBlockedBy === "1",
+      // Default to including blockedBy so list responses are consistent with GET /api/issues/:id.
+      // Opt out with ?includeBlockedBy=false (or 0) for perf-sensitive callers that don't need the graph.
+      includeBlockedBy: req.query.includeBlockedBy !== "false" && req.query.includeBlockedBy !== "0",
       includeBlockedInboxAttention:
         req.query.includeBlockedInboxAttention === "true" || req.query.includeBlockedInboxAttention === "1",
       q: req.query.q as string | undefined,