diff --git a/components/permissions/permission_manager.cc b/components/permissions/permission_manager.cc
index c6b14327e9255..db343124f2b6d 100644
--- a/components/permissions/permission_manager.cc
+++ b/components/permissions/permission_manager.cc
@@ -605,6 +605,17 @@ content::PermissionResult PermissionManager::GetPermissionStatusInternal(
 
   GURL canonical_requesting_origin = PermissionUtil::GetCanonicalOrigin(
       content_settings_type, requesting_origin, embedding_origin);
+  // ==================== POC INSTRUMENTATION ====================
+  if (render_frame_host) {
+    LOG(ERROR) << "[POC] GetPermissionStatusInternal: "
+               << "rfh_origin="
+               << render_frame_host->GetLastCommittedOrigin().GetDebugString()
+               << " requesting_origin=" << requesting_origin.spec()
+               << " embedding_origin=" << embedding_origin.spec()
+               << " canonical_requesting_origin="
+               << canonical_requesting_origin.spec();
+  }
+  // =============================================================
   content::PermissionResult result = context->GetPermissionStatus(
       permission_descriptor, render_frame_host,
       canonical_requesting_origin.DeprecatedGetOriginAsURL(),
diff --git a/components/permissions/permission_util.cc b/components/permissions/permission_util.cc
index 2f6fbe5270245..3c447580aa61f 100644
--- a/components/permissions/permission_util.cc
+++ b/components/permissions/permission_util.cc
@@ -459,8 +459,22 @@ GURL PermissionUtil::GetLastCommittedOriginAsURL(
   }
 #endif
 
+  // ==================== POC INSTRUMENTATION ====================
+  url::Origin lco = render_frame_host->GetLastCommittedOrigin();
+  LOG(ERROR) << "[POC] GetLastCommittedOriginAsURL called:"
+             << " origin=" << lco.GetDebugString()
+             << " opaque=" << lco.opaque()
+             << " GetURL()=" << lco.GetURL().spec()
+             << " visible_url=" << web_contents->GetVisibleURL().spec();
+  // =============================================================
   if (render_frame_host->GetLastCommittedOrigin().GetURL().is_empty()) {
     if (!web_contents->GetVisibleURL().is_empty()) {
+      // ==================== POC INSTRUMENTATION ====================
+      LOG(ERROR) << "[POC] *** FALLBACK FIRED *** "
+                 << "Opaque/empty origin substituted with VisibleURL: "
+                 << web_contents->GetVisibleURL().spec()
+                 << " (origin was opaque=" << lco.opaque() << ")";
+      // =============================================================
       return web_contents->GetVisibleURL();
     }
   }