### 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
} else {
				
				Viewport *viewport = get_viewport();
				ERR_FAIL_NULL(viewport);
				data.RI = viewport->_gui_add_root_control(this);
				get_parent()->connect(SNAME("child_order_changed"), callable_mp(get_viewport(), &Viewport::gui_set_root_order_dirty), CONNECT_REFERENCE_COUNTED);
			}
			data.parent_canvas_item = get_parent_item();
			if (data.parent_canvas_item) {
				data.parent_canvas_item->connect("item_rect_changed", callable_mp(this, &Control::_size_changed));
			} else {
				
				Viewport *viewport = get_viewport();
				ERR_FAIL_NULL(viewport);
				viewport->connect("size_changed", callable_mp(this, &Control::_size_changed));
			}
		} break;
		case NOTIFICATION_EXIT_CANVAS: {
			if (data.parent_canvas_item) {
				data.parent_canvas_item->disconnect("item_rect_changed", callable_mp(this, &Control::_size_changed));
				data.parent_canvas_item = nullptr;
			} else {
				
				Viewport *viewport = get_viewport();
				ERR_FAIL_NULL(viewport);
				viewport->disconnect("size_changed", callable_mp(this, &Control::_size_changed));
			}
			if (data.RI) {
				get_viewport()->_gui_remove_root_control(data.RI);
				data.RI = nullptr;