diff --git a/plugins/kanban/dashboard/dist/index.js b/plugins/kanban/dashboard/dist/index.js
index 62a0a2e6f1..8bd2c8f40b 100644
--- a/plugins/kanban/dashboard/dist/index.js
+++ b/plugins/kanban/dashboard/dist/index.js
@@ -511,6 +511,7 @@
       if (!boardData) return null;
       const q = search.trim().toLowerCase();
       const filterTask = function (t) {
+        if (tenantFilter && t.tenant !== tenantFilter) return false;
         if (assigneeFilter && t.assignee !== assigneeFilter) return false;
         if (q) {
           const hay = `${t.id} ${t.title || ""} ${t.assignee || ""} ${t.tenant || ""}`.toLowerCase();
@@ -523,7 +524,7 @@
           return Object.assign({}, col, { tasks: col.tasks.filter(filterTask) });
         }),
       });
-    }, [boardData, assigneeFilter, search]);
+    }, [boardData, tenantFilter, assigneeFilter, search]);
 
     // --- actions ------------------------------------------------------------
     const moveTask = useCallback(function (taskId, newStatus) {
diff --git a/tests/plugins/test_kanban_dashboard_plugin.py b/tests/plugins/test_kanban_dashboard_plugin.py
index 5e1b771f88..f1e562425d 100644
--- a/tests/plugins/test_kanban_dashboard_plugin.py
+++ b/tests/plugins/test_kanban_dashboard_plugin.py
@@ -147,6 +147,23 @@ def test_dashboard_select_filters_use_sdk_value_change_handler():
     assert "selectChangeHandler(props.setAssigneeFilter)" in js
 
 
+def test_dashboard_client_side_filtering_includes_tenant_filter():
+    """The rendered board must also filter by tenant.
+
+    The API request includes ``?tenant=...``, but the dashboard also filters the
+    locally cached board for search/assignee changes. Without checking
+    ``tenantFilter`` here, switching tenants can leave stale cards visible until a
+    full reload finishes.
+    """
+
+    repo_root = Path(__file__).resolve().parents[2]
+    bundle = repo_root / "plugins" / "kanban" / "dashboard" / "dist" / "index.js"
+    js = bundle.read_text()
+
+    assert "if (tenantFilter && t.tenant !== tenantFilter) return false;" in js
+    assert "[boardData, tenantFilter, assigneeFilter, search]" in js
+
+
 # ---------------------------------------------------------------------------
 # GET /tasks/:id returns body + comments + events + links
 # ---------------------------------------------------------------------------