diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7e486f5..fe1f161d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@
 
 ### Fixed
 
-- **Offline recovery now verifies unreliable browser offline reports with the existing `/health` probe before showing or sticking on the browser-reason banner (#4170).** `navigator.onLine` is treated as a hint for the banner reason, while server reachability remains the source of truth, so browsers that incorrectly report offline can recover without a page reload or permanent connection-lost state. (#4170)
+- **Offline recovery now verifies unreliable browser offline reports with the existing `/health` probe before showing or sticking on the browser-reason banner.** `navigator.onLine` is treated as a hint for the banner reason, while server reachability remains the source of truth, so browsers that incorrectly report offline can recover without a page reload or permanent connection-lost state. (#4170)
 
 ## [v0.51.410] — 2026-06-14 — Release NW (chat Mermaid lightbox + workspace CSV table preview, #4075/#4025)
 
diff --git a/static/ui.js b/static/ui.js
index 588ee007..cf84abec 100644
--- a/static/ui.js
+++ b/static/ui.js
@@ -86,7 +86,10 @@ async function _probeOfflineRecovery(){
   finally{_offlineHealthProbePromise=null;}
 }
 async function _showOfflineBannerIfProbeFails(reason){
+  const visibleAtStart=_offlineVisible;
+  if(visibleAtStart)_setOfflineChecking(true);
   const ok=await _probeOfflineRecovery();
+  if(visibleAtStart)_setOfflineChecking(false);
   if(ok){
     if(_offlineVisible){_stopOfflineProbeTimer();await _recoverFromOfflineSoftly();}
     return true;
@@ -101,7 +104,7 @@ async function checkOfflineRecoveryNow(){
     _setOfflineChecking(true);
     const ok=await _probeOfflineRecovery();
     _setOfflineChecking(false);
-    if(ok){_stopOfflineProbeTimer();await _recoverFromOfflineSoftly();return true;}
+    if(ok){if(!_offlineVisible)return true;_stopOfflineProbeTimer();await _recoverFromOfflineSoftly();return true;}
     showOfflineBanner(_browserReportsOnline()?'network':'browser');
     return false;
   })();
diff --git a/tests/test_4170_offline_probe.py b/tests/test_4170_offline_probe.py
index 15801f3c..69217b8c 100644
--- a/tests/test_4170_offline_probe.py
+++ b/tests/test_4170_offline_probe.py
@@ -37,12 +37,16 @@ def test_recovery_loop_probes_even_when_browser_reports_offline():
     assert "_probeOfflineRecovery()" in body
     assert "if(!_browserReportsOnline()){showOfflineBanner('browser');return false;}" not in body
     assert body.find("_probeOfflineRecovery()") < body.find("showOfflineBanner(")
+    assert "if(ok){if(!_offlineVisible)return true;_stopOfflineProbeTimer();await _recoverFromOfflineSoftly();return true;}" in body
     assert "showOfflineBanner(_browserReportsOnline()?'network':'browser')" in body
 
 
 def test_probe_backed_browser_banner_helper_uses_health_as_source_of_truth():
     body = _strip_comments(_fn_body(UI_JS, "async function _showOfflineBannerIfProbeFails("))
+    assert "const visibleAtStart=_offlineVisible;" in body
+    assert "if(visibleAtStart)_setOfflineChecking(true);" in body
     assert "const ok=await _probeOfflineRecovery();" in body
+    assert "if(visibleAtStart)_setOfflineChecking(false);" in body
     assert "if(ok)" in body
     assert "showOfflineBanner(reason||(_browserReportsOnline()?'network':'browser'))" in body
     assert body.find("_probeOfflineRecovery()") < body.find("showOfflineBanner(")