Use TileSetRenderer in the editor.

OpenRA.Editor/BrushTool.cs

@@ -27,7 +27,7 @@ namespace OpenRA.Editor
 		{
 			// change the bits in the map
 			var template = surface.TileSet.Templates[brushTemplate.N];
-			var tile = template.Data;
+			var tile = surface.TileSetRenderer.Data(brushTemplate.N);
 			var pos = surface.GetBrushLocation();
 
 			if (surface.GetModifiers() == Keys.Shift)
@@ -42,7 +42,7 @@ namespace OpenRA.Editor
 					if (surface.Map.IsInMap(new CVec(u, v) + pos))
 					{
 						var z = u + v * template.Size.X;
-						if (tile.TileBitmapBytes[z] != null)
+						if (tile[z] != null)
 							surface.Map.MapTiles.Value[u + pos.X, v + pos.Y] =
 								new TileReference<ushort, byte>
 								{