### 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_MAIN_THREAD_GUARD;
	ERR_FAIL_COND(!isfinite(p_size.x) || !isfinite(p_size.y));
	Size2 new_size = p_size;
	Size2 min = get_combined_minimum_size();
	if (new_size.x < min.x) {
		new_size.x = min.x;
	}
	if (new_size.y < min.y) {
		new_size.y = min.y;
	}
	if (p_keep_offsets) {
		_compute_anchors(Rect2(data.pos_cache, new_size), data.offset, data.anchor);
	} else {
		_compute_offsets(Rect2(data.pos_cache, new_size), data.anchor, data.offset);
	}
	_size_changed();
}
Size2 Control::get_size() const {
	ERR_READ_THREAD_GUARD_V(Size2());
	return data.size_cache;
}
void Control::reset_size() {
	ERR_MAIN_THREAD_GUARD;
	set_size(Size2());
}
void Control::set_rect(const Rect2 &p_rect) {