Potential fix for #38

platform/safari/vapi-background.js

@@ -327,6 +327,7 @@ vAPI.tabs.registerListeners = function() {
         if ( !vAPI.tabs.popupCandidate || !e.target || e.url === 'about:blank' ) {
             return;
         }
+
         var targetUrl = e.url,
             targetTabId = vAPI.tabs.getTabId(e.target).toString(),
             openerTabId = vAPI.tabs.popupCandidate;
@@ -650,6 +651,7 @@ safari.application.addEventListener('deactivate', function(event) {
     if ( !(event.target instanceof SafariBrowserTab) ) {
         return;
     }
+
     // when a tab is deactivated...
     var tabId = vAPI.tabs.getTabId(event.target),
         state = iconStateForTabId[tabId];

src/js/tab.js

@@ -117,7 +117,7 @@ master switch and dynamic filtering rules can be evaluated now properly even
 in the absence of a PageStore object, this was not the case before.
 
 Also, the TabContext object will try its best to find a good candidate root
-document URL for when none exists. This takes care of 
+document URL for when none exists. This takes care of
 <https://github.com/chrisaljoudi/uBlock/issues/1001>.
 
 The TabContext manager is self-contained, and it takes care to properly
@@ -426,7 +426,7 @@ housekeep itself.
         var tabContext = lookup(tabId);
         this.rootHostname = tabContext.rootHostname;
         this.rootDomain = tabContext.rootDomain;
-        this.pageHostname = 
+        this.pageHostname =
         this.pageDomain =
         this.requestURL =
         this.requestHostname =
@@ -502,7 +502,7 @@ vAPI.tabs.onClosed = function(tabId) {
 
 // https://github.com/gorhill/uBlock/issues/99
 // https://github.com/gorhill/uBlock/issues/991
-// 
+//
 // popup:
 //   Test/close target URL
 // popunder:
@@ -1019,6 +1019,14 @@ vAPI.setTimeout(pageStoreJanitor, pageStoreJanitorPeriod);
 
 /******************************************************************************/
 
+// Update existing tabs on load
+(function () {
+    var tabStack = vAPI.tabs.stack || {};
+    for(var tabId in tabStack) {
+        vAPI.tabs.onUpdated(tabId, { url: tabStack[tabId].url }, tabStack[tabId]);
+    }
+})();
+
 })();
 
 /******************************************************************************/