### 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(false);
	return false;
}
String Control::properties_managed_by_container[] = {
	"offset_left",
	"offset_top",
	"offset_right",
	"offset_bottom",
	"anchor_left",
	"anchor_top",
	"anchor_right",
	"anchor_bottom",
	"position",
	"rotation",
	"scale",
	"size"
};
bool Control::_set(const StringName &p_name, const Variant &p_value) {
	ERR_MAIN_THREAD_GUARD_V(false);
	String name = p_name;
	if (!name.begins_with("theme_override")) {
		return false;
	}
	if (p_value.get_type() == Variant::NIL || (p_value.get_type() == Variant::OBJECT && (Object *)p_value == nullptr)) {
		if (name.begins_with("theme_override_icons/")) {
			String dname = name.get_slicec('/', 1);