4 files changed, 30 insertions, 13 deletions

diff --git a/scene/2d/physics_body_2d.cpp b/scene/2d/physics_body_2d.cpp
index 7f46ec4c1e..7f5b5d1ea4 100644
--- a/scene/2d/physics_body_2d.cpp
+++ b/scene/2d/physics_body_2d.cpp
@@ -1761,7 +1761,7 @@ void CharacterBody2D::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "floor_max_angle", PROPERTY_HINT_RANGE, "0,180,0.1,radians"), "set_floor_max_angle", "get_floor_max_angle");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "floor_snap_length", PROPERTY_HINT_RANGE, "0,32,0.1,or_greater,suffix:px"), "set_floor_snap_length", "get_floor_snap_length");
 
-	ADD_GROUP("Moving Platform", "platform");
+	ADD_GROUP("Moving Platform", "platform_");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "platform_on_leave", PROPERTY_HINT_ENUM, "Add Velocity,Add Upward Velocity,Do Nothing", PROPERTY_USAGE_DEFAULT), "set_platform_on_leave", "get_platform_on_leave");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "platform_floor_layers", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_platform_floor_layers", "get_platform_floor_layers");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "platform_wall_layers", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_platform_wall_layers", "get_platform_wall_layers");
diff --git a/scene/2d/polygon_2d.cpp b/scene/2d/polygon_2d.cpp
index 2c825e8f7b..e41664b006 100644
--- a/scene/2d/polygon_2d.cpp
+++ b/scene/2d/polygon_2d.cpp
@@ -663,5 +663,7 @@ Polygon2D::Polygon2D() {
 }
 
 Polygon2D::~Polygon2D() {
+	// This will free the internally-allocated mesh instance, if allocated.
+	RS::get_singleton()->canvas_item_attach_skeleton(get_canvas_item(), RID());
 	RS::get_singleton()->free(mesh);
 }
diff --git a/scene/2d/tile_map.cpp b/scene/2d/tile_map.cpp
index 40e8818262..0159e9f313 100644
--- a/scene/2d/tile_map.cpp
+++ b/scene/2d/tile_map.cpp
@@ -1859,11 +1859,13 @@ void TileMap::_scenes_update_dirty_quadrants(SelfList<TileMapQuadrant>::List &r_
 	while (q_list_element) {
 		TileMapQuadrant &q = *q_list_element->self();
 
-		// Clear the scenes.
-		for (const KeyValue<Vector2i, String> &E : q.scenes) {
-			Node *node = get_node_or_null(E.value);
-			if (node) {
-				node->queue_free();
+		// Clear the scenes if instance cache was cleared.
+		if (instantiated_scenes.is_empty()) {
+			for (const KeyValue<Vector2i, String> &E : q.scenes) {
+				Node *node = get_node_or_null(E.value);
+				if (node) {
+					node->queue_free();
+				}
 			}
 		}
 
@@ -1871,6 +1873,15 @@ void TileMap::_scenes_update_dirty_quadrants(SelfList<TileMapQuadrant>::List &r_
 
 		// Recreate the scenes.
 		for (const Vector2i &E_cell : q.cells) {
+			Vector3i cell_coords = Vector3i(q.layer, E_cell.x, E_cell.y);
+			if (instantiated_scenes.has(cell_coords)) {
+				// Skip scene if the instance was cached (to avoid recreating scenes unnecessarily).
+				continue;
+			}
+			if (!Engine::get_singleton()->is_editor_hint()) {
+				instantiated_scenes.insert(cell_coords);
+			}
+
 			const TileMapCell &c = get_cell(q.layer, E_cell, true);
 
 			TileSetSource *source;
@@ -1907,15 +1918,16 @@ void TileMap::_scenes_update_dirty_quadrants(SelfList<TileMapQuadrant>::List &r_
 }
 
 void TileMap::_scenes_cleanup_quadrant(TileMapQuadrant *p_quadrant) {
-	// Clear the scenes.
-	for (const KeyValue<Vector2i, String> &E : p_quadrant->scenes) {
-		Node *node = get_node_or_null(E.value);
-		if (node) {
-			node->queue_free();
+	// Clear the scenes if instance cache was cleared.
+	if (instantiated_scenes.is_empty()) {
+		for (const KeyValue<Vector2i, String> &E : p_quadrant->scenes) {
+			Node *node = get_node_or_null(E.value);
+			if (node) {
+				node->queue_free();
+			}
 		}
+		p_quadrant->scenes.clear();
 	}
-
-	p_quadrant->scenes.clear();
 }
 
 void TileMap::_scenes_draw_quadrant_debug(TileMapQuadrant *p_quadrant) {
@@ -4037,6 +4049,7 @@ void TileMap::_bind_methods() {
 void TileMap::_tile_set_changed() {
 	emit_signal(SNAME("changed"));
 	_tile_set_changed_deferred_update_needed = true;
+	instantiated_scenes.clear();
 	call_deferred(SNAME("_tile_set_changed_deferred_update"));
 }
 
diff --git a/scene/2d/tile_map.h b/scene/2d/tile_map.h
index eaf100631e..68a5d3c80b 100644
--- a/scene/2d/tile_map.h
+++ b/scene/2d/tile_map.h
@@ -236,6 +236,8 @@ private:
 	void _clear_layer_internals(int p_layer);
 	void _clear_internals();
 
+	HashSet<Vector3i> instantiated_scenes;
+
 	// Rect caching.
 	void _recompute_rect_cache();