### 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
ERR_READ_THREAD_GUARD_V(GROW_DIRECTION_BEGIN);
	return data.h_grow;
}
void Control::set_v_grow_direction(GrowDirection p_direction) {
	ERR_MAIN_THREAD_GUARD;
	if (data.v_grow == p_direction) {
		return;
	}
	ERR_FAIL_INDEX((int)p_direction, 3);
	data.v_grow = p_direction;
	_size_changed();
}
Control::GrowDirection Control::get_v_grow_direction() const {
	ERR_READ_THREAD_GUARD_V(GROW_DIRECTION_BEGIN);
	return data.v_grow;
}
void Control::_compute_anchors(Rect2 p_rect, const real_t p_offsets[4], real_t (&r_anchors)[4]) {
	Size2 parent_rect_size = get_parent_anchorable_rect().size;
	ERR_FAIL_COND(parent_rect_size.x == 0.0);
	ERR_FAIL_COND(parent_rect_size.y == 0.0);
	real_t x = p_rect.position.x;
	if (is_layout_rtl()) {
		x = parent_rect_size.x - x - p_rect.size.x;
	}
	r_anchors[0] = (x - p_offsets[0]) / parent_rect_size.x;
	r_anchors[1] = (p_rect.position.y - p_offsets[1]) / parent_rect_size.y;
	r_anchors[2] = (x + p_rect.size.x - p_offsets[2]) / parent_rect_size.x;
	r_anchors[3] = (p_rect.position.y + p_rect.size.y - p_offsets[3]) / parent_rect_size.y;
}
void Control::_compute_offsets(Rect2 p_rect, const real_t p_anchors[4], real_t (&r_offsets)[4]) {