### Godot version

master ([06ccbfe](https://github.com/godotengine/godot/commit/06ccbfe8eec6e840db3df2360dc2804386f940b8))

### System information

PopOS 22.04

### Issue description

Sometimes the doc page is broken when the engine is closed and then restarted.
Closing the doc and opening it again fixes it.

![2023-05-27_22-15](https://github.com/godotengine/godot/assets/3624853/ed202a55-03e8-420a-bc1c-ccfc7f7cd02a)


### Steps to reproduce

- Open a documentation page for any node
- Restart Godot

### Minimal reproduction project

NA

EDIT : Added the commit hash @Calinou 
a.append(Color::html(values[j]));
			} else if (!nodepath.search(values[j]).is_null()) {
				if (values[j].begins_with("$")) {
					String v = values[j].substr(1, values[j].length());
					a.append(NodePath(v));
				}
			} else if (!boolean.search(values[j]).is_null()) {
				if (values[j] == "true") {
					a.append(true);
				} else if (values[j] == "false") {
					a.append(false);
				}
			} else if (!decimal.search(values[j]).is_null()) {
				a.append(values[j].to_float());
			} else if (!numerical.search(values[j]).is_null()) {
				a.append(values[j].to_int());
			} else {
				a.append(values[j]);
			}
		}
#endif
		if (values.size() > 1) {
			d[key] = a;
		} else if (values.size() == 1) {
			d[key] = a[0];
		}
	}
	return d;
}
RichTextLabel::RichTextLabel(const String &p_text) {