### 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_MAIN_THREAD_GUARD;
	switch (p_notification) {
		case NOTIFICATION_POSTINITIALIZE: {
			data.initialized = true;
			_invalidate_theme_cache();
			_update_theme_item_cache();
		} break;
		case NOTIFICATION_PARENTED: {
			Node *parent_node = get_parent();
			data.parent_control = Object::cast_to<Control>(parent_node);
			data.parent_window = Object::cast_to<Window>(parent_node);
			data.theme_owner->assign_theme_on_parented(this);
			_update_layout_mode();
		} break;
		case NOTIFICATION_UNPARENTED: {
			data.parent_control = nullptr;
			data.parent_window = nullptr;
			data.theme_owner->clear_theme_on_unparented(this);
		} break;
		case NOTIFICATION_ENTER_TREE: {
#ifdef TOOLS_ENABLED
			if (is_part_of_edited_scene()) {
				
				set_message_translation(false);
				notification(NOTIFICATION_TRANSLATION_CHANGED);
			}
#endif
			notification(NOTIFICATION_THEME_CHANGED);
		} break;
		case NOTIFICATION_POST_ENTER_TREE: {