### 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_INDEX((int)p_focus_mode, 3);
	if (is_inside_tree() && p_focus_mode == FOCUS_NONE && data.focus_mode != FOCUS_NONE && has_focus()) {
		release_focus();
	}
	data.focus_mode = p_focus_mode;
}
Control::FocusMode Control::get_focus_mode() const {
	ERR_READ_THREAD_GUARD_V(FOCUS_NONE);
	return data.focus_mode;
}
bool Control::has_focus() const {
	ERR_READ_THREAD_GUARD_V(false);
	return is_inside_tree() && get_viewport()->_gui_control_has_focus(this);
}
void Control::grab_focus() {
	ERR_MAIN_THREAD_GUARD;
	ERR_FAIL_COND(!is_inside_tree());
	if (data.focus_mode == FOCUS_NONE) {
		WARN_PRINT("This control can't grab focus. Use set_focus_mode() to allow a control to get focus.");
		return;
	}
	get_viewport()->_gui_control_grab_focus(this);
}
void Control::grab_click_focus() {
	ERR_MAIN_THREAD_GUARD;
	ERR_FAIL_COND(!is_inside_tree());
	get_viewport()->_gui_grab_click_focus(this);
}
void Control::release_focus() {