fix infinite call loop on theme change.

Apply suggestions from code review

editor/editor_inspector.cpp

@@ -50,6 +50,7 @@
 #include "scene/property_utils.h"
 #include "scene/resources/packed_scene.h"
 #include "scene/resources/style_box_flat.h"
+#include "scene/scene_string_names.h"
 
 bool EditorInspector::_property_path_matches(const String &p_property_path, const String &p_filter, EditorPropertyNameProcessor::Style p_style) {
 	if (p_property_path.containsn(p_filter)) {
@@ -390,6 +391,17 @@ void EditorProperty::_notification(int p_what) {
 				delete_rect = Rect2();
 			}
 		} break;
+		case NOTIFICATION_ENTER_TREE: {
+			if (has_borders) {
+				get_parent()->connect(SceneStringName(theme_changed), callable_mp(this, &EditorProperty::_update_property_bg));
+				_update_property_bg();
+			}
+		} break;
+		case NOTIFICATION_EXIT_TREE: {
+			if (has_borders) {
+				get_parent()->disconnect(SceneStringName(theme_changed), callable_mp(this, &EditorProperty::_update_property_bg));
+			}
+		}
 	}
 }
 
@@ -810,6 +822,9 @@ void EditorProperty::set_label_reference(Control *p_control) {
 
 void EditorProperty::set_bottom_editor(Control *p_control) {
 	bottom_editor = p_control;
+	if (has_borders) {
+		_update_property_bg();
+	}
 }
 
 Variant EditorProperty::_get_cache_value(const StringName &p_prop, bool &r_valid) const {
@@ -4087,6 +4102,9 @@ void EditorInspector::_notification(int p_what) {
 
 		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
 			bool needs_update = false;
+			if (EditorThemeManager::is_generated_theme_outdated() && !sub_inspector) {
+				add_theme_style_override("panel", get_theme_stylebox(SNAME("panel"), SNAME("Tree")));
+			}
 
 			if (use_settings_name_style && EditorSettings::get_singleton()->check_changed_settings_in_group("interface/editor/localize_settings")) {
 				EditorPropertyNameProcessor::Style style = EditorPropertyNameProcessor::get_settings_style();

editor/editor_inspector.h

@@ -136,6 +136,8 @@ private:
 	void _update_pin_flags();
 
 protected:
+	bool has_borders = false;
+
 	void _notification(int p_what);
 	static void _bind_methods();
 	virtual void _set_read_only(bool p_read_only);

editor/editor_properties.cpp

@@ -3364,8 +3364,6 @@ void EditorPropertyResource::update_property() {
 					EditorNode::get_singleton()->hide_unused_editors();
 					opened_editor = false;
 				}
-
-				_update_property_bg();
 			}
 		}
 	}
@@ -3422,12 +3420,6 @@ bool EditorPropertyResource::is_colored(ColorationMode p_mode) {
 
 void EditorPropertyResource::_notification(int p_what) {
 	switch (p_what) {
-		case NOTIFICATION_THEME_CHANGED: {
-			if (EditorThemeManager::is_generated_theme_outdated()) {
-				_update_property_bg();
-			}
-		} break;
-
 		case NOTIFICATION_EXIT_TREE: {
 			const EditorInspector *ei = get_parent_inspector();
 			if (ei && !ei->is_main_editor_inspector()) {
@@ -3439,6 +3431,7 @@ void EditorPropertyResource::_notification(int p_what) {
 
 EditorPropertyResource::EditorPropertyResource() {
 	use_sub_inspector = bool(EDITOR_GET("interface/inspector/open_resources_in_current_inspector"));
+	has_borders = true;
 }
 
 ////////////// DEFAULT PLUGIN //////////////////////

editor/editor_properties_array_dict.cpp

@@ -391,8 +391,6 @@ void EditorPropertyArray::update_property() {
 			paginator->connect("page_changed", callable_mp(this, &EditorPropertyArray::_page_changed));
 			vbox->add_child(paginator);
 
-			_update_property_bg();
-
 			for (int i = 0; i < page_length; i++) {
 				_create_new_property_slot();
 			}
@@ -454,7 +452,6 @@ void EditorPropertyArray::update_property() {
 			memdelete(container);
 			button_add_item = nullptr;
 			container = nullptr;
-			_update_property_bg();
 			slots.clear();
 		}
 	}
@@ -628,10 +625,6 @@ Node *EditorPropertyArray::get_base_node() {
 void EditorPropertyArray::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_THEME_CHANGED:
-			if (EditorThemeManager::is_generated_theme_outdated()) {
-				_update_property_bg();
-			}
-			[[fallthrough]];
 		case NOTIFICATION_ENTER_TREE: {
 			change_type->clear();
 			for (int i = 0; i < Variant::VARIANT_MAX; i++) {
@@ -851,6 +844,7 @@ EditorPropertyArray::EditorPropertyArray() {
 	subtype = Variant::NIL;
 	subtype_hint = PROPERTY_HINT_NONE;
 	subtype_hint_string = "";
+	has_borders = true;
 }
 
 ///////////////////// DICTIONARY ///////////////////////////
@@ -1000,7 +994,6 @@ void EditorPropertyDictionary::update_property() {
 			paginator = memnew(EditorPaginator);
 			paginator->connect("page_changed", callable_mp(this, &EditorPropertyDictionary::_page_changed));
 			vbox->add_child(paginator);
-			_update_property_bg();
 
 			for (int i = 0; i < page_length; i++) {
 				_create_new_property_slot(slots.size());
@@ -1075,7 +1068,6 @@ void EditorPropertyDictionary::update_property() {
 			memdelete(container);
 			button_add_item = nullptr;
 			container = nullptr;
-			_update_property_bg();
 			add_panel = nullptr;
 			slots.clear();
 		}
@@ -1089,10 +1081,6 @@ void EditorPropertyDictionary::_object_id_selected(const StringName &p_property,
 void EditorPropertyDictionary::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_THEME_CHANGED:
-			if (EditorThemeManager::is_generated_theme_outdated()) {
-				_update_property_bg();
-			}
-			[[fallthrough]];
 		case NOTIFICATION_ENTER_TREE: {
 			change_type->clear();
 			for (int i = 0; i < Variant::VARIANT_MAX; i++) {
@@ -1109,6 +1097,7 @@ void EditorPropertyDictionary::_notification(int p_what) {
 
 			if (button_add_item) {
 				button_add_item->set_icon(get_editor_theme_icon(SNAME("Add")));
+				add_panel->add_theme_style_override(SNAME("panel"), get_theme_stylebox(SNAME("DictionaryAddItem")));
 			}
 		} break;
 	}
@@ -1166,6 +1155,7 @@ EditorPropertyDictionary::EditorPropertyDictionary() {
 	add_child(change_type);
 	change_type->connect("id_pressed", callable_mp(this, &EditorPropertyDictionary::_change_type_menu));
 	changing_type_index = -1;
+	has_borders = true;
 }
 
 ///////////////////// LOCALIZABLE STRING ///////////////////////////