Change border style on Windows 8/10

Core/Notification/FormNotificationBase.cs

@@ -105,6 +105,10 @@ public FormNotificationBase(Form owner, bool enableContextMenu){
                 this.browser.Dispose();
                 this.owner.FormClosed -= owner_FormClosed;
             };
+            
+            if (WindowsUtils.ShouldAvoidToolWindow){
+                FormBorderStyle = FormBorderStyle.FixedSingle;
+            }
 
             // ReSharper disable once VirtualMemberCallInContructor
             UpdateTitle();

Core/Utils/WindowsUtils.cs

@@ -8,6 +8,13 @@
 
 namespace TweetDck.Core.Utils{
     static class WindowsUtils{
+        public static bool ShouldAvoidToolWindow { get; }
+
+        static WindowsUtils(){
+            Version ver = Environment.OSVersion.Version;
+            ShouldAvoidToolWindow = ver.Major == 6 && ver.Minor == 2; // windows 8/10
+        }
+
         public static bool CheckFolderWritePermission(string path){
             string testFile = Path.Combine(path, ".test");