### 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(nullptr);
	Control *from = const_cast<Control *>(this);
	while (true) {
		
		if (!data.focus_prev.is_empty()) {
			Node *n = get_node(data.focus_prev);
			Control *c;
			if (n) {
				c = Object::cast_to<Control>(n);
				ERR_FAIL_COND_V_MSG(!c, nullptr, "Previous focus node is not a control: " + n->get_name() + ".");
			} else {
				return nullptr;
			}
			if (c->is_visible() && c->get_focus_mode() != FOCUS_NONE) {
				return c;
			}
		}