### Godot version

4.1 db5113d

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/ee391a0d-44b7-4a35-bfa5-40d47af75f65)
Notice the empty space to the right. I actually have a worse case in my project, but I couldn't reproduce it outside:
![](https://chat.godotengine.org/file-upload/X3RMM5A9gN7RZEizo/Clipboard%20-%202%20czerwca%202023%2022:54)
Regression from #77651
CC @Rindbee 

### Steps to reproduce

1. Add a new script
2. Name it `;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;.gd`
3. Hover its name in the Script Editor

### Minimal reproduction project

N/A
ERR_READ_THREAD_GUARD_V(Rect2());
	if (!is_inside_tree()) {
		return Rect2();
	}
	Rect2 parent_rect;
	if (data.parent_canvas_item) {
		parent_rect = data.parent_canvas_item->get_anchorable_rect();
	} else {
#ifdef TOOLS_ENABLED
		Node *edited_scene_root = get_tree()->get_edited_scene_root();
		Node *scene_root_parent = edited_scene_root ? edited_scene_root->get_parent() : nullptr;
		if (scene_root_parent && get_viewport() == scene_root_parent->get_viewport()) {
			parent_rect.size = Size2(GLOBAL_GET("display/window/size/viewport_width"), GLOBAL_GET("display/window/size/viewport_height"));
		} else {
			parent_rect = get_viewport()->get_visible_rect();
		}
#else
		parent_rect = get_viewport()->get_visible_rect();
#endif
	}
	return parent_rect;
}
Size2 Control::get_parent_area_size() const {
	ERR_READ_THREAD_GUARD_V(Size2());
	return get_parent_anchorable_rect().size;
}
Transform2D Control::_get_internal_transform() const {