diff --git a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/FlowDebuggerTests.cs b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/FlowDebuggerTests.cs
index 99e3f395..0a00613c 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/FlowDebuggerTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Deployment/FlowDebuggerTests.cs
@@ -1,4 +1,5 @@
 using System.Globalization;
+using System.Text.RegularExpressions;
 using Microsoft.Playwright;
 using ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests.Cluster;
 using Xunit;
@@ -210,11 +211,14 @@ public class FlowDebuggerTests : IClassFixture<FlowDebuggerFixture>
 
         // Instance selection goes through the shared InstancePicker combobox (prefix
         // "flow-instance"): typing the name filters the area tree and expands its
-        // ancestors, then the exact-text row is clicked to select and close the panel.
+        // ancestors, then the exact-text row is clicked to select and close the panel. The
+        // test only knows the instance NAME (not its id), so the row is matched through the
+        // data-test contract (flow-instance-row) with an exact-text regex rather than a
+        // free-text GetByText scan.
         var instanceInput = page.Locator("[data-test='flow-instance-input']");
         await instanceInput.FillAsync(RigInstanceName);
-        var instancePanel = page.Locator("[data-test='flow-instance-panel']");
-        var instanceRow = instancePanel.GetByText(RigInstanceName, new() { Exact = true });
+        var instanceRow = page.Locator("[data-test='flow-instance-row']",
+            new() { HasTextRegex = new Regex($"^\\s*{Regex.Escape(RigInstanceName)}\\s*$") });
         Skip.IfNot(
             await WaitForCountAsync(page, instanceRow),
             $"Instance {RigInstanceName} is not on the rig's site-a — run docker/seed-delmia-sim.sh.");