diff --git a/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts b/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts
index a570de1a..2a4eb6a4 100644
--- a/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts
+++ b/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts
@@ -97,7 +97,7 @@ export function useDeploymentPageState(
         metricsEnabled: agentConfig?.metricsEnabled ?? defaultForm.monitoring.metricsEnabled,
         metricsInterval: defaultForm.monitoring.metricsInterval,
         samplingRate: agentConfig?.samplingRate !== undefined
-          ? (Number.isInteger(agentConfig.samplingRate) ? `${agentConfig.samplingRate}.0` : String(agentConfig.samplingRate))
+          ? String(agentConfig.samplingRate)
           : defaultForm.monitoring.samplingRate,
         compressSuccess: agentConfig?.compressSuccess ?? defaultForm.monitoring.compressSuccess,
         replayEnabled: defaultForm.monitoring.replayEnabled,
diff --git a/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useFormDirty.ts b/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useFormDirty.ts
index 0e8fbb77..ce512fa5 100644
--- a/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useFormDirty.ts
+++ b/ui/src/pages/AppsTab/AppDeploymentPage/hooks/useFormDirty.ts
@@ -1,5 +1,5 @@
 import { useMemo } from 'react';
-import type { DeploymentPageFormState } from './useDeploymentPageState';
+import type { DeploymentPageFormState, MonitoringFormState } from './useDeploymentPageState';
 
 export interface PerTabDirty {
   monitoring: boolean;
@@ -9,13 +9,22 @@ export interface PerTabDirty {
   anyLocalEdit: boolean;
 }
 
+// Normalize free-text numeric fields (user types "1.0" / "1" / "1.00" — all equal).
+// NaN compares as NaN through JSON, which is harmless since both sides coerce the same.
+function normalizeMonitoring(m: MonitoringFormState): Omit<MonitoringFormState, 'samplingRate'> & { samplingRate: number } {
+  const { samplingRate, ...rest } = m;
+  return { ...rest, samplingRate: parseFloat(samplingRate) };
+}
+
 export function useFormDirty(
   form: DeploymentPageFormState,
   serverState: DeploymentPageFormState,
   stagedJar: File | null,
 ): PerTabDirty {
   return useMemo(() => {
-    const monitoring = JSON.stringify(form.monitoring) !== JSON.stringify(serverState.monitoring);
+    const monitoring =
+      JSON.stringify(normalizeMonitoring(form.monitoring)) !==
+      JSON.stringify(normalizeMonitoring(serverState.monitoring));
     const resources = JSON.stringify(form.resources) !== JSON.stringify(serverState.resources);
     const variables = JSON.stringify(form.variables) !== JSON.stringify(serverState.variables);
     const sensitiveKeys = JSON.stringify(form.sensitiveKeys) !== JSON.stringify(serverState.sensitiveKeys);