修复同步帧问题

VIZ.Framework.Connection/Provider/FixedBuffer/ConnFixedBufferPackageProvider.cs

@@ -32,7 +32,7 @@ namespace VIZ.Framework.Connection
 
             if (syncHeader != null)
             {
-                this.SyncHeader.AddRange(SyncHeader);
+                this.SyncHeader.AddRange(syncHeader);
             }
         }
 
@@ -84,6 +84,7 @@ namespace VIZ.Framework.Connection
                 {
                     byte[] buffer_cache_new = new byte[this.FixedBufferSize];
                     Array.Copy(this.buffer_cache, sync_index, buffer_cache_new, 0, this.FixedBufferSize - sync_index);
+                    this.buffer_cache = buffer_cache_new;
                     this.buffer_index -= sync_index;
 
                     continue;

VIZ.Framework.Core/Core/WPF/ModelBase.cs

@@ -45,7 +45,7 @@ namespace VIZ.Framework.Core
                 return;
             }
 
-            WPFHelper.BeginInvoke(() =>
+            WPFHelper.Invoke(() =>
             {
                 this.PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(propertyName));
             });
@@ -73,7 +73,7 @@ namespace VIZ.Framework.Core
                 return;
             }
 
-            WPFHelper.BeginInvoke(() =>
+            WPFHelper.Invoke(() =>
             {
                 this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
             });