### 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 
type = ITEM_FRAME;
			first_invalid_line.store(0);
			first_invalid_font_line.store(0);
			first_resized_line.store(0);
		}
	};
	struct ItemText : public Item {
		String text;
		ItemText() { type = ITEM_TEXT; }
	};
	struct ItemDropcap : public Item {
		String text;
		Ref<Font> font;
		int font_size = 0;
		Color color;
		int ol_size = 0;
		Color ol_color;
		Rect2 dropcap_margins;
		ItemDropcap() { type = ITEM_DROPCAP; }
	};
	struct ItemImage : public Item {
		Ref<Texture2D> image;
		InlineAlignment inline_align = INLINE_ALIGNMENT_CENTER;
		Size2 size;
		Color color;
		ItemImage() { type = ITEM_IMAGE; }