fix(QuickMenu): Fix resizing the quick menu when the number of items changes

Fixes #1086

Author: Belphemur

SoundSwitch.UI.Menu/Form/QuickMenu.cs

@@ -60,6 +60,7 @@ public void SetData(IEnumerable<IconMenuItem<T>.DataContainer> payloads)
             var toAdd = newPayloadsById.Keys.Except(_currentPayloads.Keys);
             var toModify = _currentPayloads.Keys.Intersect(newPayloadsById.Keys);
 
+            var currentPayloadSizeDifferentNewPayloads = _currentPayloads.Count != originalOrderPayloads.Length;
             var needRearrange = false;
 
             var controlCollection = Controls;
@@ -101,9 +102,13 @@ public void SetData(IEnumerable<IconMenuItem<T>.DataContainer> payloads)
                 Height = 0;
             }
 
+            if (!_isLocationSet || currentPayloadSizeDifferentNewPayloads)
+            {
+                Region = Region.FromHrgn(RoundedCorner.CreateRoundRectRgn(0, 0, Width, Height, 20, 20));
+            }
+
             if (!_isLocationSet)
             {
-                Region = Region.FromHrgn(RoundedCorner.CreateRoundRectRgn(0, 0, Width, Height , 20, 20));
                 Show();
                 SetLocationToCursor();
                 _isLocationSet = true;