Fix TextureRegionEditorPlugin popping up even when explicitly hidden

Fixes #27468

editor/plugins/texture_region_editor_plugin.cpp

@@ -1021,15 +1021,21 @@ bool TextureRegionEditorPlugin::handles(Object *p_object) const {
 	return p_object->is_class("Sprite") || p_object->is_class("Sprite3D") || p_object->is_class("NinePatchRect") || p_object->is_class("StyleBoxTexture") || p_object->is_class("AtlasTexture");
 }
 
+void TextureRegionEditorPlugin::_editor_visiblity_changed() {
+	manually_hidden = !region_editor->is_visible_in_tree();
+}
+
 void TextureRegionEditorPlugin::make_visible(bool p_visible) {
 	if (p_visible) {
 		texture_region_button->show();
-		if (region_editor->is_stylebox() || region_editor->is_atlas_texture() || region_editor->is_ninepatch() || (region_editor->get_sprite() && region_editor->get_sprite()->is_region()) || (region_editor->get_sprite_3d() && region_editor->get_sprite_3d()->is_region()) || texture_region_button->is_pressed()) {
+		bool is_node_configured = region_editor->is_stylebox() || region_editor->is_atlas_texture() || region_editor->is_ninepatch() || (region_editor->get_sprite() && region_editor->get_sprite()->is_region()) || (region_editor->get_sprite_3d() && region_editor->get_sprite_3d()->is_region());
+		if ((is_node_configured && !manually_hidden) || texture_region_button->is_pressed()) {
 			editor->make_bottom_panel_item_visible(region_editor);
 		}
 	} else {
 		if (region_editor->is_visible_in_tree()) {
 			editor->hide_bottom_panel();
+			manually_hidden = false;
 		}
 		texture_region_button->hide();
 		region_editor->edit(NULL);
@@ -1076,12 +1082,18 @@ void TextureRegionEditorPlugin::set_state(const Dictionary &p_state) {
 	}
 }
 
+void TextureRegionEditorPlugin::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("_editor_visiblity_changed"), &TextureRegionEditorPlugin::_editor_visiblity_changed);
+}
+
 TextureRegionEditorPlugin::TextureRegionEditorPlugin(EditorNode *p_node) {
+	manually_hidden = false;
 	editor = p_node;
-	region_editor = memnew(TextureRegionEditor(p_node));
 
+	region_editor = memnew(TextureRegionEditor(p_node));
 	region_editor->set_custom_minimum_size(Size2(0, 200) * EDSCALE);
 	region_editor->hide();
+	region_editor->connect("visibility_changed", this, "_editor_visiblity_changed");
 
 	texture_region_button = p_node->add_bottom_panel_item(TTR("TextureRegion"), region_editor);
 	texture_region_button->hide();

editor/plugins/texture_region_editor_plugin.h

@@ -145,10 +145,16 @@ public:
 class TextureRegionEditorPlugin : public EditorPlugin {
 	GDCLASS(TextureRegionEditorPlugin, EditorPlugin);
 
+	bool manually_hidden;
 	Button *texture_region_button;
 	TextureRegionEditor *region_editor;
 	EditorNode *editor;
 
+protected:
+	static void _bind_methods();
+
+	void _editor_visiblity_changed();
+
 public:
 	virtual String get_name() const { return "TextureRegion"; }
 	bool has_main_screen() const { return false; }