Resolves "New Tab" bug after web content process jettison

App/Browser View/BrowserViewController+WebKitDelegate.swift

@@ -10,7 +10,11 @@ import WebKit
 extension BrowserViewController: WKNavigationDelegate, WKUIDelegate
 {
     func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
-        currentTab.loadError = nil
+        if let tab = tabController.tab(forWebView: webView) {
+            // We're alive!
+            tab.contentProcessTerminated = false
+            tab.loadError = nil
+        }
         
         // Check to make sure we have connected to the web content process
         if !currentTab.bridge.webContentProcessConnected {
@@ -120,6 +124,10 @@ extension BrowserViewController: WKNavigationDelegate, WKUIDelegate
         }
     }
     
+    func webViewWebContentProcessDidTerminate(_ webView: WKWebView) {
+        tabController.tab(forWebView: webView)?.contentProcessTerminated = true
+    }
+    
     // MARK: WKUIDelegate
     
     func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView?

App/Browser View/BrowserViewController.swift

@@ -520,6 +520,8 @@ class BrowserViewController: UIViewController
     }
     
     internal func updateTitleAndURL(forWebView webView: WKWebView) {
+        guard let tab = tabController.tab(forWebView: webView) else { return }
+        
         if webView == browserView.webView {
             browserView.titlebarView.setTitle(webView.title ?? "")
             
@@ -531,8 +533,7 @@ class BrowserViewController: UIViewController
         }
         
         // Figure out which tab this corresponds to
-        let tab = tabController.tabs.first { $0.webView == webView }
-        if let tab = tab, let tabIndex = tabController.tabs.firstIndex(of: tab) {
+        if let tabIndex = tabController.tabs.firstIndex(of: tab) {
             tabBarViewController.tabBarView.reloadTab(atIndex: tabIndex)
         }
     }