diff --git a/src/Metrics/ScenarioMonitor.ts b/src/Metrics/ScenarioMonitor.ts
index f4fc2849a..c68509866 100644
--- a/src/Metrics/ScenarioMonitor.ts
+++ b/src/Metrics/ScenarioMonitor.ts
@@ -105,6 +105,23 @@ class ScenarioMonitor {
     });
 
     ctx.timeoutId = window.setTimeout(() => {
+      const missingPhases = ctx.config.requiredPhases.filter((p) => !ctx.completed.has(p));
+
+      this.devLog(
+        `timeout: ${scenario} | missing=[${missingPhases.join(", ")}] | completed=[${Array.from(ctx.completed).join(
+          ", ",
+        )}] | documentHidden=${document.hidden} | hasExpectedFailure=${ctx.hasExpectedFailure}`,
+      );
+
+      traceMark(Action.MetricsScenario, {
+        event: "scenario_timeout",
+        scenario,
+        missingPhases: missingPhases.join(","),
+        completedPhases: Array.from(ctx.completed).join(","),
+        documentHidden: document.hidden,
+        hasExpectedFailure: ctx.hasExpectedFailure,
+      });
+
       // If an expected failure occurred (auth, firewall, etc.), emit healthy instead of unhealthy
       const healthy = ctx.hasExpectedFailure;
       this.emit(ctx, healthy, true);
@@ -288,6 +305,7 @@ class ScenarioMonitor {
       scenario: ctx.scenario,
       healthy,
       timedOut,
+      documentHidden: document.hidden,
       platform,
       api,
       durationMs: finalSnapshot.durationMs,
diff --git a/src/Metrics/useMetricPhases.ts b/src/Metrics/useMetricPhases.ts
index 31c07a98d..41f96fcfa 100644
--- a/src/Metrics/useMetricPhases.ts
+++ b/src/Metrics/useMetricPhases.ts
@@ -1,24 +1,26 @@
 import React from "react";
 import MetricScenario from "./MetricEvents";
-import { useMetricScenario } from "./MetricScenarioProvider";
+import { scenarioMonitor } from "./ScenarioMonitor";
 import { ApplicationMetricPhase, CommonMetricPhase } from "./ScenarioConfig";
 
 /**
  * Hook to automatically complete the Interactive phase when the component becomes interactive.
  * Uses requestAnimationFrame to complete after the browser has painted.
+ *
+ * Calls scenarioMonitor directly (not via React context) so that the effect dependencies
+ * are only [scenario, enabled] — both stable primitives. This prevents re-renders from
+ * cancelling the pending rAF due to an unstable context function reference.
  */
 export function useInteractive(scenario: MetricScenario, enabled = true) {
-  const { completePhase } = useMetricScenario();
-
   React.useEffect(() => {
     if (!enabled) {
       return undefined;
     }
     const id = requestAnimationFrame(() => {
-      completePhase(scenario, CommonMetricPhase.Interactive);
+      scenarioMonitor.completePhase(scenario, CommonMetricPhase.Interactive);
     });
     return () => cancelAnimationFrame(id);
-  }, [scenario, completePhase, enabled]);
+  }, [scenario, enabled]);
 }
 
 /**
@@ -26,18 +28,20 @@ export function useInteractive(scenario: MetricScenario, enabled = true) {
  * Tracks tree rendering and completes Interactive phase.
  * Only completes DatabaseTreeRendered if the database fetch was successful.
  * Note: Scenario must be started before databases are fetched (in refreshExplorer).
+ *
+ * Calls scenarioMonitor directly (not via React context) for the same stability reason
+ * as useInteractive — avoids effect re-runs from unstable context function references.
  */
 export function useDatabaseLoadScenario(databaseTreeNodes: unknown[], fetchSucceeded: boolean) {
-  const { completePhase } = useMetricScenario();
   const hasCompletedTreeRenderRef = React.useRef(false);
 
   // Track DatabaseTreeRendered phase (only if fetch succeeded)
   React.useEffect(() => {
     if (!hasCompletedTreeRenderRef.current && fetchSucceeded) {
       hasCompletedTreeRenderRef.current = true;
-      completePhase(MetricScenario.DatabaseLoad, ApplicationMetricPhase.DatabaseTreeRendered);
+      scenarioMonitor.completePhase(MetricScenario.DatabaseLoad, ApplicationMetricPhase.DatabaseTreeRendered);
     }
-  }, [databaseTreeNodes, fetchSucceeded, completePhase]);
+  }, [databaseTreeNodes, fetchSucceeded]);
 
   // Track Interactive phase
   useInteractive(MetricScenario.DatabaseLoad);