Explicitly show viewport 0 in the SpatialEditorPlugin if the container is large enough.

editor/plugins/spatial_editor_plugin.cpp

@@ -3726,6 +3726,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 
 			case VIEW_USE_1_VIEWPORT: {
 
+				viewports[0]->show();
 				for (int i = 1; i < 4; i++) {
 
 					viewports[i]->hide();
@@ -3736,7 +3737,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 			} break;
 			case VIEW_USE_2_VIEWPORTS: {
 
-				for (int i = 1; i < 4; i++) {
+				for (int i = 0; i < 4; i++) {
 
 					if (i == 1 || i == 3)
 						viewports[i]->hide();
@@ -3750,7 +3751,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 			} break;
 			case VIEW_USE_2_VIEWPORTS_ALT: {
 
-				for (int i = 1; i < 4; i++) {
+				for (int i = 0; i < 4; i++) {
 
 					if (i == 1 || i == 3)
 						viewports[i]->hide();
@@ -3763,7 +3764,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 			} break;
 			case VIEW_USE_3_VIEWPORTS: {
 
-				for (int i = 1; i < 4; i++) {
+				for (int i = 0; i < 4; i++) {
 
 					if (i == 1)
 						viewports[i]->hide();
@@ -3778,7 +3779,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 			} break;
 			case VIEW_USE_3_VIEWPORTS_ALT: {
 
-				for (int i = 1; i < 4; i++) {
+				for (int i = 0; i < 4; i++) {
 
 					if (i == 1)
 						viewports[i]->hide();
@@ -3793,7 +3794,7 @@ void SpatialEditorViewportContainer::_notification(int p_what) {
 			} break;
 			case VIEW_USE_4_VIEWPORTS: {
 
-				for (int i = 1; i < 4; i++) {
+				for (int i = 0; i < 4; i++) {
 
 					viewports[i]->show();
 				}