From 9d86ab0af988449fe7ff1d7a2b58d7dd00b1585d Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Tue, 7 Nov 2017 11:31:19 -0500
Subject: [PATCH] fix #3201

---
 src/js/pagestore.js | 35 +++++++++++++++++++++++++----------
 src/js/tab.js       |  2 +-
 2 files changed, 26 insertions(+), 11 deletions(-)

diff --git a/src/js/pagestore.js b/src/js/pagestore.js
index 8d050fb56..9a012baeb 100644
--- a/src/js/pagestore.js
+++ b/src/js/pagestore.js
@@ -240,8 +240,8 @@ var pageStoreJunkyardMax = 10;
 
 /******************************************************************************/
 
-var PageStore = function(tabId) {
-    this.init(tabId);
+var PageStore = function(tabId, context) {
+    this.init(tabId, context);
     this.journal = [];
     this.journalTimer = null;
     this.journalLastCommitted = this.journalLastUncommitted = undefined;
@@ -250,19 +250,23 @@ var PageStore = function(tabId) {
 
 /******************************************************************************/
 
-PageStore.factory = function(tabId) {
+PageStore.factory = function(tabId, context) {
     var entry = pageStoreJunkyard.pop();
     if ( entry === undefined ) {
-        entry = new PageStore(tabId);
+        entry = new PageStore(tabId, context);
     } else {
-        entry.init(tabId);
+        entry.init(tabId, context);
     }
     return entry;
 };
 
 /******************************************************************************/
 
-PageStore.prototype.init = function(tabId) {
+// https://github.com/gorhill/uBlock/issues/3201
+//   The context is used to determine whether we report behavior change to the
+//   logger.
+
+PageStore.prototype.init = function(tabId, context) {
     var tabContext = µb.tabContextManager.mustLookup(tabId);
     this.tabId = tabId;
 
@@ -292,8 +296,15 @@ PageStore.prototype.init = function(tabId) {
     this.netFilteringCache = NetFilteringResultCache.factory();
     this.internalRedirectionCount = 0;
 
-    this.noCosmeticFiltering = µb.hnSwitches.evaluateZ('no-cosmetic-filtering', tabContext.rootHostname) === true;
-    if ( this.noCosmeticFiltering && µb.logger.isEnabled() ) {
+    this.noCosmeticFiltering = µb.hnSwitches.evaluateZ(
+        'no-cosmetic-filtering',
+        tabContext.rootHostname
+    ) === true;
+    if (
+        this.noCosmeticFiltering &&
+        µb.logger.isEnabled() &&
+        context === 'tabCommitted'
+    ) {
         µb.logger.writeOne(
             tabId,
             'cosmetic',
@@ -314,7 +325,11 @@ PageStore.prototype.init = function(tabId) {
             'generichide'
         );
         this.noGenericCosmeticFiltering = result === 2;
-        if ( result !== 0 && µb.logger.isEnabled() ) {
+        if (
+            result !== 0 &&
+            µb.logger.isEnabled() &&
+            context === 'tabCommitted'
+        ) {
             µb.logger.writeOne(
                 tabId,
                 'net',
@@ -360,7 +375,7 @@ PageStore.prototype.reuse = function(context) {
     }
     this.disposeFrameStores();
     this.netFilteringCache = this.netFilteringCache.dispose();
-    this.init(this.tabId);
+    this.init(this.tabId, context);
     return this;
 };
 
diff --git a/src/js/tab.js b/src/js/tab.js
index d3d43c893..e010d9e7f 100644
--- a/src/js/tab.js
+++ b/src/js/tab.js
@@ -843,7 +843,7 @@ vAPI.tabs.registerListeners();
     if ( !pageStore ) {
         this.updateTitle(tabId);
         this.pageStoresToken = Date.now();
-        return (this.pageStores[tabId] = this.PageStore.factory(tabId));
+        return (this.pageStores[tabId] = this.PageStore.factory(tabId, context));
     }
 
     // https://github.com/chrisaljoudi/uBlock/issues/516