diff --git a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Deployment/InstanceConfigure.razor b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Deployment/InstanceConfigure.razor
index 0a940e31..b611d82d 100644
--- a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Deployment/InstanceConfigure.razor
+++ b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Deployment/InstanceConfigure.razor
@@ -142,7 +142,8 @@
                                     <option value="@c.Id">@c.Name (@c.Protocol)</option>
                                 }
                             </select>
-                            <button class="btn btn-outline-primary btn-sm" @onclick="ApplyBulkBinding"
+                            <button class="btn btn-outline-primary btn-sm" data-test="binding-bulk-apply"
+                                    @onclick="ApplyBulkBinding"
                                     disabled="@(_bulkConnectionId == 0)">Apply connection</button>
                         </label>
                     }
diff --git a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/InstanceConfigureTests.cs b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/InstanceConfigureTests.cs
index afc9f42b..5b95beb5 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/InstanceConfigureTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/InstanceConfigureTests.cs
@@ -55,7 +55,10 @@ public sealed class InstanceConfigureTests : IClassFixture<InstanceConfigureFixt
         // Bulk-assign every bindable attribute to the fixture connection, then Apply + Save.
         // Select by VALUE (the connection id) — most robust, since the select binds _bulkConnectionId.
         await bulkSelect.SelectOptionAsync(new SelectOptionValue { Value = _cfg.ConnectionId.ToString() });
-        await page.GetByRole(AriaRole.Button, new() { Name = "Apply" }).ClickAsync();
+        // Keyed, not by accessible name: the grouped-bindings panel (77f4af0d) added a
+        // per-group "Apply to n" button, so a Name = "Apply" role locator now matches two
+        // elements and fails Playwright's strict mode.
+        await page.Locator("[data-test='binding-bulk-apply']").ClickAsync();
         await page.GetByRole(AriaRole.Button, new() { Name = "Save Bindings" }).ClickAsync();
 
         await Assertions.Expect(page.Locator(".toast")).ToHaveCountAsync(1, new() { Timeout = 15_000 });