Fix for tiles being invisible after a map transfer if they were on screen before it

Data/Scripts/006_Map renderer/001_TilemapRenderer.rb

@@ -292,6 +292,7 @@ class TilemapRenderer
     @ox                     = 0
     @oy                     = 0
     @visible                = true
+    @need_refresh           = true
     @disposed               = false
   end
 
@@ -347,7 +348,9 @@ class TilemapRenderer
 
   #=============================================================================
 
-  def refresh; end
+  def refresh
+    @need_refresh = true
+  end
 
   def refresh_tile_bitmap(tile, map, tile_id)
     tile.tile_id = tile_id
@@ -538,7 +541,7 @@ class TilemapRenderer
     # Recalculate autotile frames
     @tilesets.update
     @autotiles.update
-    do_full_refresh = false
+    do_full_refresh = @need_refresh
     if @viewport.ox != @old_viewport_ox || @viewport.oy != @old_viewport_oy
       @old_viewport_ox = @viewport.ox
       @old_viewport_oy = @viewport.oy
@@ -604,6 +607,7 @@ class TilemapRenderer
         end
       end
     end
+    @need_refresh = false
     @autotiles.changed = false
   end
 end