Fix FrontPageDisplay is adding more news posts on api state change

osu.Game/Overlays/News/Displays/FrontPageDisplay.cs

@@ -15,6 +15,8 @@ namespace osu.Game.Overlays.News.Displays
 {
     public class FrontPageDisplay : OverlayView<GetNewsResponse>
     {
+        protected override bool PerformFetchOnApiStateChange => false;
+
         protected override APIRequest<GetNewsResponse> CreateRequest() => new GetNewsRequest();
 
         private FillFlowContainer content;

osu.Game/Overlays/OverlayView.cs

@@ -18,6 +18,11 @@ namespace osu.Game.Overlays
     public abstract class OverlayView<T> : CompositeDrawable, IOnlineComponent
         where T : class
     {
+        /// <summary>
+        /// Whether we should perform fetch on api state change to online (true by default).
+        /// </summary>
+        protected virtual bool PerformFetchOnApiStateChange => true;
+
         [Resolved]
         protected IAPIProvider API { get; private set; }
 
@@ -33,6 +38,10 @@ namespace osu.Game.Overlays
         {
             base.LoadComplete();
             API.Register(this);
+
+            // If property is true - fetch will be triggered automatically by APIStateChanged and if not - we need to manually call it.
+            if (!PerformFetchOnApiStateChange)
+                PerformFetch();
         }
 
         /// <summary>
@@ -64,7 +73,8 @@ namespace osu.Game.Overlays
             switch (state)
             {
                 case APIState.Online:
-                    PerformFetch();
+                    if (PerformFetchOnApiStateChange)
+                        PerformFetch();
                     break;
             }
         }