diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index ec5b4795..7b65bcf4 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1797,6 +1797,29 @@ function App() {
       let hiddenSeen = document.visibilityState === 'hidden';
 
       const wait = (ms: number) => new Promise<void>((resolve) => window.setTimeout(resolve, ms));
+      // Automatic scale-fix may call ResetWebViewZoom multiple times on startup.
+      // The backend path depends on Wails unexported fields and can fail harmlessly;
+      // log at most once so the console is not flooded with expected unavailability.
+      let resetWebViewZoomUnavailableLogged = false;
+      const tryResetWebViewZoomQuietly = async () => {
+          try {
+              const res = await (window as any).go?.app?.App?.ResetWebViewZoom?.();
+              if (res?.success) {
+                  return true;
+              }
+              if (!resetWebViewZoomUnavailableLogged) {
+                  resetWebViewZoomUnavailableLogged = true;
+                  console.warn('ResetWebViewZoom unavailable in fixWindowScaleIfNeeded:', res?.message);
+              }
+              return false;
+          } catch (e) {
+              if (!resetWebViewZoomUnavailableLogged) {
+                  resetWebViewZoomUnavailableLogged = true;
+                  console.warn('ResetWebViewZoom call failed in fixWindowScaleIfNeeded', e);
+              }
+              return false;
+          }
+      };
 
       const fixWindowScaleIfNeeded = async (reason: WindowScaleFixReason) => {
           if (cancelled || inFlight) return;
@@ -1828,14 +1851,7 @@ function App() {
               const shouldResetWebViewZoom = shouldResetWebViewZoomForScaleFix(reason, hasViewportScaleDrift);
 
               if (shouldResetWebViewZoom && !isMaximised) {
-                  try {
-                      const res = await (window as any).go?.app?.App?.ResetWebViewZoom?.();
-                      if (!res?.success) {
-                          console.warn('ResetWebViewZoom unavailable in fixWindowScaleIfNeeded:', res?.message);
-                      }
-                  } catch (e) {
-                      console.warn('ResetWebViewZoom call failed in fixWindowScaleIfNeeded', e);
-                  }
+                  await tryResetWebViewZoomQuietly();
               }
 
               if (isMaximised) {
@@ -1847,14 +1863,7 @@ function App() {
                       // backend 失败（wails 升级破坏反射 / 非 Windows）时回退到 dispatch resize 兜底；
                       // 用户仍可按 Ctrl+Shift+0 手动 toggle 修复。
                       if (shouldResetWebViewZoom) {
-                          try {
-                              const res = await (window as any).go?.app?.App?.ResetWebViewZoom?.();
-                              if (!res?.success) {
-                                  console.warn('ResetWebViewZoom unavailable in fixWindowScaleIfNeeded:', res?.message);
-                              }
-                          } catch (e) {
-                              console.warn('ResetWebViewZoom call failed in fixWindowScaleIfNeeded', e);
-                          }
+                          await tryResetWebViewZoomQuietly();
                       }
                       window.dispatchEvent(new Event('resize'));
                       lastFixAt = Date.now();
diff --git a/frontend/src/components/MessagePublishModal.i18n.test.ts b/frontend/src/components/MessagePublishModal.i18n.test.ts
index ef03aae2..8fd1099a 100644
--- a/frontend/src/components/MessagePublishModal.i18n.test.ts
+++ b/frontend/src/components/MessagePublishModal.i18n.test.ts
@@ -19,6 +19,9 @@ describe('MessagePublishModal i18n shell guards', () => {
     expect(modalSource).toContain('connectionName: connection.name');
     expect(modalSource).toContain('detail: res?.message');
     expect(modalSource).toContain('detail: error?.message || String(error)');
+    expect(modalSource).toContain('destroyOnHidden');
+    // Closed modals unmount Form; never call form APIs while open === false.
+    expect(modalSource).not.toContain('form.resetFields()');
     expect(modalSource).not.toContain('测试发送消息');
     expect(modalSource).not.toContain('okText="发送"');
     expect(modalSource).not.toContain('发送失败:');
diff --git a/frontend/src/components/MessagePublishModal.tsx b/frontend/src/components/MessagePublishModal.tsx
index b4bea4b9..7b12e865 100644
--- a/frontend/src/components/MessagePublishModal.tsx
+++ b/frontend/src/components/MessagePublishModal.tsx
@@ -63,6 +63,8 @@ const MessagePublishModal: React.FC<MessagePublishModalProps> = ({
   );
 
   useEffect(() => {
+    // destroyOnHidden unmounts the Form while closed. Only touch the form
+    // instance when the modal is open so useForm stays connected.
     if (!open || !connection) return;
     form.setFieldsValue(
       createDefaultMessagePublishDraft(
@@ -74,9 +76,8 @@ const MessagePublishModal: React.FC<MessagePublishModalProps> = ({
 
   useEffect(() => {
     if (open) return;
-    form.resetFields();
     setSubmitting(false);
-  }, [form, open]);
+  }, [open]);
 
   const handleSubmit = async () => {
     if (!connection) return;
diff --git a/frontend/src/components/audit/SqlAuditDetailDrawer.tsx b/frontend/src/components/audit/SqlAuditDetailDrawer.tsx
index 41c7be7f..9fa27705 100644
--- a/frontend/src/components/audit/SqlAuditDetailDrawer.tsx
+++ b/frontend/src/components/audit/SqlAuditDetailDrawer.tsx
@@ -146,7 +146,7 @@ export default function SqlAuditDetailDrawer({
       onClose={onClose}
       width="min(760px, calc(100vw - 24px))"
       title={t('sql_audit.detail.title')}
-      destroyOnClose
+      destroyOnHidden
       styles={{
         body: {
           padding: 20,
diff --git a/frontend/src/components/audit/SqlAuditSettingsDrawer.tsx b/frontend/src/components/audit/SqlAuditSettingsDrawer.tsx
index 602ee1f6..333fe69a 100644
--- a/frontend/src/components/audit/SqlAuditSettingsDrawer.tsx
+++ b/frontend/src/components/audit/SqlAuditSettingsDrawer.tsx
@@ -82,7 +82,7 @@ export default function SqlAuditSettingsDrawer({
       onClose={onClose}
       width={440}
       title={t('sql_audit.settings.title')}
-      destroyOnClose
+      destroyOnHidden
       extra={(
         <Space>
           <Button onClick={onClose}>{t('common.cancel')}</Button>
diff --git a/frontend/src/components/explain/ExplainWorkbench.tsx b/frontend/src/components/explain/ExplainWorkbench.tsx
index 5cc1f747..eadbe369 100644
--- a/frontend/src/components/explain/ExplainWorkbench.tsx
+++ b/frontend/src/components/explain/ExplainWorkbench.tsx
@@ -262,7 +262,7 @@ export default function ExplainWorkbench({ open, onClose, config, dbName, sql }:
       width="90%"
       style={{ top: 20 }}
       title={<Title level={5} style={{ margin: 0 }}>{t('sql_analysis.workbench.title')}</Title>}
-      destroyOnClose
+      destroyOnHidden
     >
       <div style={{ minHeight: 480, height: '70vh' }}>
         <ExplainReportView
diff --git a/frontend/src/components/explain/SlowQueryPanel.tsx b/frontend/src/components/explain/SlowQueryPanel.tsx
index eaae9613..ac02abaf 100644
--- a/frontend/src/components/explain/SlowQueryPanel.tsx
+++ b/frontend/src/components/explain/SlowQueryPanel.tsx
@@ -318,7 +318,7 @@ export default function SlowQueryPanel({ open, onClose, config, dbName, onPickQu
           <Text type="secondary">{dbName || t('sql_analysis.slow_query.current_connection')}</Text>
         </div>
       }
-      destroyOnClose
+      destroyOnHidden
     >
       <div className="gn-slow-query-modal-body">
         <SlowQueryPanelContent
@@ -454,7 +454,7 @@ function SlowQueryCard({
               {t('common.close')}
             </Button>,
           ]}
-          destroyOnClose
+          destroyOnHidden
         >
           <pre
             className="gn-slow-query-full-sql"
diff --git a/frontend/src/components/resultDiff/ResultDiffPanel.tsx b/frontend/src/components/resultDiff/ResultDiffPanel.tsx
index b5a83a23..9b6ebdb3 100644
--- a/frontend/src/components/resultDiff/ResultDiffPanel.tsx
+++ b/frontend/src/components/resultDiff/ResultDiffPanel.tsx
@@ -840,7 +840,7 @@ const ResultDiffPanel: React.FC<ResultDiffPanelProps> = ({
         onClose={handleClose}
         maskClosable={false}
         width="min(1100px, 96vw)"
-        destroyOnClose={false}
+        destroyOnHidden={false}
         extra={actionButtons}
       >
         {body}
diff --git a/frontend/src/components/resultDiff/ResultDiffWizard.tsx b/frontend/src/components/resultDiff/ResultDiffWizard.tsx
index fb14c884..d02d2c49 100644
--- a/frontend/src/components/resultDiff/ResultDiffWizard.tsx
+++ b/frontend/src/components/resultDiff/ResultDiffWizard.tsx
@@ -184,7 +184,7 @@ const ResultDiffWizard: React.FC<ResultDiffWizardProps> = ({
       onOk={handleStart}
       okText={t('result_diff.wizard.start')}
       confirmLoading={loading}
-      destroyOnClose
+      destroyOnHidden
       width={640}
       maskClosable={!loading}
     >
diff --git a/frontend/src/components/resultDiff/ViewDataVerifyWizard.tsx b/frontend/src/components/resultDiff/ViewDataVerifyWizard.tsx
index 56df3c6f..42420fbe 100644
--- a/frontend/src/components/resultDiff/ViewDataVerifyWizard.tsx
+++ b/frontend/src/components/resultDiff/ViewDataVerifyWizard.tsx
@@ -510,7 +510,7 @@ const ViewDataVerifyWizard: React.FC<ViewDataVerifyWizardProps> = ({
       onOk={handleStart}
       okText={t('result_diff.view_verify.start')}
       confirmLoading={running || probing}
-      destroyOnClose
+      destroyOnHidden
       width={680}
       maskClosable={!running}
     >