### Godot version

4.1 dev2, 4.0.3

### System information

Windows 10, ryzen 5900x, radeon 6950xt (driver: 23.2.2)

### Issue description

There are two bugs:
- When I create a new node, it is created outside of the viewport. (as in first video)
- When I run the project, all the content inside the viewport dont appear. (as in second video)
I believe the second issue is related to the first.

Note: these problems are in RTL editors.

https://github.com/godotengine/godot/assets/121864036/84f0d434-0d1b-4c23-9fb0-510257e2e191


https://github.com/godotengine/godot/assets/121864036/b2bc20c7-1e2e-4d04-99e7-d66860ffced2




### Steps to reproduce

Videos explain.

### Minimal reproduction project

N/A
if (data.stored_layout_mode != LayoutMode::LAYOUT_MODE_UNCONTROLLED && data.stored_layout_mode != LayoutMode::LAYOUT_MODE_ANCHORS) {
		return LayoutPreset::PRESET_TOP_LEFT;
	}
	
	if (data.stored_use_custom_anchors) {
		return -1;
	}
	
	float left = get_anchor(SIDE_LEFT);
	float right = get_anchor(SIDE_RIGHT);
	float top = get_anchor(SIDE_TOP);
	float bottom = get_anchor(SIDE_BOTTOM);
	if (left == ANCHOR_BEGIN && right == ANCHOR_BEGIN && top == ANCHOR_BEGIN && bottom == ANCHOR_BEGIN) {
		return (int)LayoutPreset::PRESET_TOP_LEFT;
	}
	if (left == ANCHOR_END && right == ANCHOR_END && top == ANCHOR_BEGIN && bottom == ANCHOR_BEGIN) {
		return (int)LayoutPreset::PRESET_TOP_RIGHT;
	}