Profile editor - Fixed keyframe positions of groups not updating

src/Artemis.Core/Models/Profile/LayerProperties/ILayerPropertyKeyframe.cs

@@ -1,4 +1,5 @@
 using System;
+using System.ComponentModel;
 using Artemis.Storage.Entities.Profile;
 
 namespace Artemis.Core
@@ -6,7 +7,7 @@ namespace Artemis.Core
     /// <summary>
     ///     Represents a keyframe on a <see cref="ILayerProperty" /> containing a value and a timestamp
     /// </summary>
-    public interface ILayerPropertyKeyframe
+    public interface ILayerPropertyKeyframe : INotifyPropertyChanged
     {
         /// <summary>
         ///     Gets an untyped reference to the layer property of this keyframe

src/Artemis.UI/Screens/ProfileEditor/Panels/Properties/Timeline/TimelineGroupViewModel.cs

@@ -27,6 +27,7 @@ public class TimelineGroupViewModel : ActivatableViewModelBase
             PropertyGroupViewModel.Keyframes
                 .ToObservableChangeSet()
                 .AutoRefreshOnObservable(_ => profileEditorService.PixelsPerSecond)
+                .AutoRefreshOnObservable(k => k.WhenAnyValue(kv => kv.Position))
                 .Transform(k => k.Position.TotalSeconds * _pixelsPerSecond, true)
                 .Bind(out ReadOnlyObservableCollection<double> keyframePositions)
                 .Subscribe()