diff --git a/include/wx/msw/webview_edge.h b/include/wx/msw/webview_edge.h
index be7eeeac2a..ffd54f2077 100644
--- a/include/wx/msw/webview_edge.h
+++ b/include/wx/msw/webview_edge.h
@@ -105,7 +105,7 @@ private:
 
     void OnSize(wxSizeEvent& event);
 
-    void OnShow(wxShowEvent& event);
+    void OnTopLevelParentIconized(wxIconizeEvent& event);
 
     bool RunScriptSync(const wxString& javascript, wxString* output = NULL) const;
 
diff --git a/include/wx/osx/webview_webkit.h b/include/wx/osx/webview_webkit.h
index 1c92faac73..6bd6da02f3 100644
--- a/include/wx/osx/webview_webkit.h
+++ b/include/wx/osx/webview_webkit.h
@@ -113,15 +113,16 @@ private:
 class WXDLLIMPEXP_WEBVIEW wxWebViewFactoryWebKit : public wxWebViewFactory
 {
 public:
-    virtual wxWebView* Create() { return new wxWebViewWebKit; }
+    virtual wxWebView* Create() wxOVERRIDE { return new wxWebViewWebKit; }
     virtual wxWebView* Create(wxWindow* parent,
                               wxWindowID id,
                               const wxString& url = wxWebViewDefaultURLStr,
                               const wxPoint& pos = wxDefaultPosition,
                               const wxSize& size = wxDefaultSize,
                               long style = 0,
-                              const wxString& name = wxASCII_STR(wxWebViewNameStr))
+                              const wxString& name = wxASCII_STR(wxWebViewNameStr)) wxOVERRIDE
     { return new wxWebViewWebKit(parent, id, url, pos, size, style, name); }
+    virtual wxVersionInfo GetVersionInfo() wxOVERRIDE;
 };
 
 #endif // wxUSE_WEBVIEW && wxUSE_WEBVIEW_WEBKIT
diff --git a/include/wx/private/json.h b/include/wx/private/json.h
index 12d78e4a2e..8e93b7d9c8 100644
--- a/include/wx/private/json.h
+++ b/include/wx/private/json.h
@@ -56,8 +56,8 @@ bool DecodeString(const wxString& in, wxString* out)
                 out->append('\\');
                 break;
             case 'u':
-#if SIZEOF_WCHAR_T == 2
-                            // In this case, we handle surrogates without doing anything special was wchar_t strings use UTF-17 encoding.
+#if SIZEOF_WCHAR_T == 2
+                            // In this case, we handle surrogates without doing anything special was wchar_t strings use UTF-17 encoding.
                 if (wxIsxdigit(ch[1]) && wxIsxdigit(ch[2]) &&
                     wxIsxdigit(ch[3]) && wxIsxdigit(ch[4]))
                 {
diff --git a/src/msw/webview_edge.cpp b/src/msw/webview_edge.cpp
index 06b1f1126a..bdf8ce5b76 100644
--- a/src/msw/webview_edge.cpp
+++ b/src/msw/webview_edge.cpp
@@ -296,6 +296,7 @@ HRESULT wxWebViewEdgeImpl::OnWebViewCreated(HRESULT result, ICoreWebView2Control
 
     m_initialized = true;
     UpdateBounds();
+    m_webViewController->put_IsVisible(true);
 
     // Connect and handle the various WebView events
     m_webView->add_NavigationStarting(
@@ -362,7 +363,9 @@ ICoreWebView2Settings* wxWebViewEdgeImpl::GetSettings()
 
 wxWebViewEdge::~wxWebViewEdge()
 {
-    Unbind(wxEVT_SHOW, &wxWebViewEdge::OnShow, this);
+    wxWindow* topLevelParent = wxGetTopLevelParent(this);
+    if (topLevelParent)
+        topLevelParent->Unbind(wxEVT_ICONIZE, &wxWebViewEdge::OnTopLevelParentIconized, this);
     delete m_impl;
 }
 
@@ -387,7 +390,9 @@ bool wxWebViewEdge::Create(wxWindow* parent,
     if (!m_impl->Create())
         return false;
     Bind(wxEVT_SIZE, &wxWebViewEdge::OnSize, this);
-    Bind(wxEVT_SHOW, &wxWebViewEdge::OnShow, this);
+    wxWindow* topLevelParent = wxGetTopLevelParent(this);
+    if (topLevelParent)
+        topLevelParent->Bind(wxEVT_ICONIZE, &wxWebViewEdge::OnTopLevelParentIconized, this);
 
     LoadURL(url);
     return true;
@@ -399,10 +404,10 @@ void wxWebViewEdge::OnSize(wxSizeEvent& event)
     event.Skip();
 }
 
-void wxWebViewEdge::OnShow(wxShowEvent& event)
+void wxWebViewEdge::OnTopLevelParentIconized(wxIconizeEvent& event)
 {
-    if (m_impl->m_webView)
-        m_impl->m_webViewController->put_IsVisible(event.IsShown());
+    if (m_impl && m_impl->m_webViewController)
+        m_impl->m_webViewController->put_IsVisible(!event.IsIconized());
     event.Skip();
 }
 
@@ -741,15 +746,15 @@ bool wxWebViewFactoryEdge::IsAvailable()
 wxVersionInfo wxWebViewFactoryEdge::GetVersionInfo()
 {
     IsAvailable(); // Make sure ms_version string is initialized (if available)
-    long major = 0,
-         minor = 0,
-         micro = 0;
-    wxStringTokenizer tk(wxWebViewEdgeImpl::ms_version, ". ");
-    // Ignore the return value because if the version component is missing
-    // or invalid (i.e. non-numeric), the only thing we can do is to ignore
-    // it anyhow.
-    tk.GetNextToken().ToLong(&major);
-    tk.GetNextToken().ToLong(&minor);
+    long major = 0,
+         minor = 0,
+         micro = 0;
+    wxStringTokenizer tk(wxWebViewEdgeImpl::ms_version, ". ");
+    // Ignore the return value because if the version component is missing
+    // or invalid (i.e. non-numeric), the only thing we can do is to ignore
+    // it anyhow.
+    tk.GetNextToken().ToLong(&major);
+    tk.GetNextToken().ToLong(&minor);
     tk.GetNextToken().ToLong(&micro);
 
     return wxVersionInfo("Microsoft Edge WebView2", major, minor, micro);
diff --git a/src/msw/webview_ie.cpp b/src/msw/webview_ie.cpp
index a008166b6a..6b0f194dc7 100644
--- a/src/msw/webview_ie.cpp
+++ b/src/msw/webview_ie.cpp
@@ -58,16 +58,16 @@ wxVersionInfo wxWebViewFactoryIE::GetVersionInfo()
     wxRegKey key(wxRegKey::HKLM, "Software\\Microsoft\\Internet Explorer");
     wxString value;
     key.QueryValue("Version", value);
-    long major = 0,
-         minor = 0,
-         micro = 0;
-    wxStringTokenizer tk(value, ". ");
-    // Ignore the return value because if the version component is missing
-    // or invalid (i.e. non-numeric), the only thing we can do is to ignore
-    // it anyhow.
-    tk.GetNextToken().ToLong(&major);
-    tk.GetNextToken().ToLong(&minor);
-    tk.GetNextToken().ToLong(&micro);
+    long major = 0,
+         minor = 0,
+         micro = 0;
+    wxStringTokenizer tk(value, ". ");
+    // Ignore the return value because if the version component is missing
+    // or invalid (i.e. non-numeric), the only thing we can do is to ignore
+    // it anyhow.
+    tk.GetNextToken().ToLong(&major);
+    tk.GetNextToken().ToLong(&minor);
+    tk.GetNextToken().ToLong(&micro);
     return wxVersionInfo("Internet Explorer", major, minor, micro);
 }
 
diff --git a/src/osx/webview_webkit.mm b/src/osx/webview_webkit.mm
index 5350081e78..a788f8c4a3 100644
--- a/src/osx/webview_webkit.mm
+++ b/src/osx/webview_webkit.mm
@@ -87,6 +87,17 @@ wxEND_EVENT_TABLE()
 @end
 #endif // macOS 10.13+
 
+//-----------------------------------------------------------------------------
+// wxWebViewFactoryWebKit
+//-----------------------------------------------------------------------------
+
+wxVersionInfo wxWebViewFactoryWebKit::GetVersionInfo()
+{
+    int verMaj, verMin, verMicro;
+    wxGetOsVersion(&verMaj, &verMin, &verMicro);
+    return wxVersionInfo("WKWebView", verMaj, verMin, verMicro);
+}
+
 // ----------------------------------------------------------------------------
 // creation/destruction
 // ----------------------------------------------------------------------------