WinForms/WPF/OffScreen - Disable back forward cache to improve javascript integration reliability

- Workaround for common cause of "Error while fulfilling of JS: Request BrowserId : 1 not found it's likely the browser is already closed"

Issue #4621

Author: amaitland

CefSharp.OffScreen/CefSettings.cs

@@ -29,6 +29,10 @@ public CefSettings() : base()
             // Disable "Restore pages" popup after incorrect shutdown
             // https://github.com/chromiumembedded/cef/issues/3767
             CefCommandLineArgs.Add("hide-crash-restore-bubble");
+
+            // Disable the back-forward cache
+            // https://github.com/cefsharp/CefSharp/issues/4621
+            CefCommandLineArgs.Add("disable-back-forward-cache");
         }
 
         /// <summary>

CefSharp.WinForms/CefSettings.cs

@@ -23,6 +23,10 @@ public CefSettings() : base()
             // Disable "Restore pages" popup after incorrect shutdown
             // https://github.com/chromiumembedded/cef/issues/3767
             CefCommandLineArgs.Add("hide-crash-restore-bubble");
+
+            // Disable the back-forward cache
+            // https://github.com/cefsharp/CefSharp/issues/4621
+            CefCommandLineArgs.Add("disable-back-forward-cache");
         }
     }
 }

CefSharp.Wpf/CefSettings.cs

@@ -34,6 +34,10 @@ public CefSettings() : base()
             // Browser not correctly refreshing on Resize
             // https://github.com/cefsharp/CefSharp/issues/4953
             CefCommandLineArgs.Add("disable-gpu-compositing");
+
+            // Disable the back-forward cache
+            // https://github.com/cefsharp/CefSharp/issues/4621
+            CefCommandLineArgs.Add("disable-back-forward-cache");
         }
     }
 }

CefSharp.Wpf/HwndHost/CefSettings.cs

@@ -21,6 +21,10 @@ public CefSettings() : base()
             // Disable "Restore pages" popup after incorrect shutdown
             // https://github.com/chromiumembedded/cef/issues/3767
             CefCommandLineArgs.Add("hide-crash-restore-bubble");
+
+            // Disable the back-forward cache
+            // https://github.com/cefsharp/CefSharp/issues/4621
+            CefCommandLineArgs.Add("disable-back-forward-cache");
         }
     }
 }