### Godot version

3b086aa06

### System information

ArchLinux x11

### Issue description

```gdscript
extends Node

@export_group("My Properties")
@export var number = 3
@export var string = ""

@export_group("Prefixed Properties", "prefix_")
@export var prefix_number = 3
@export var prefix_string = ""

@export_group("", "")
@export var ungrouped_number = 3
```

![image](https://user-images.githubusercontent.com/70787919/214983963-528c415b-745b-47fc-9777-36ebe31a3060.png)


### Steps to reproduce

- create script
- @export_group
- go inspector

### Minimal reproduction project

‮
p_node->end_line = previous.end_line;
	p_node->end_column = previous.end_column;
	p_node->leftmost_column = MIN(p_node->leftmost_column, previous.leftmost_column);
	p_node->rightmost_column = MAX(p_node->rightmost_column, previous.rightmost_column);
}
void GDScriptParser::reset_extents(Node *p_node, GDScriptTokenizer::Token p_token) {
	p_node->start_line = p_token.start_line;
	p_node->end_line = p_token.end_line;
	p_node->start_column = p_token.start_column;
	p_node->end_column = p_token.end_column;
	p_node->leftmost_column = p_token.leftmost_column;
	p_node->rightmost_column = p_token.rightmost_column;
}
void GDScriptParser::reset_extents(Node *p_node, Node *p_from) {
	if (p_from == nullptr) {
		return;
	}
	p_node->start_line = p_from->start_line;
	p_node->end_line = p_from->end_line;
	p_node->start_column = p_from->start_column;
	p_node->end_column = p_from->end_column;
	p_node->leftmost_column = p_from->leftmost_column;
	p_node->rightmost_column = p_from->rightmost_column;
}
#ifdef DEBUG_ENABLED
void GDScriptParser::TreePrinter::increase_indent() {