### 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 
if (font_it->font_size > 0) {
				font_size = font_it->font_size;
			}
		}
		ItemFontSize *font_size_it = _find_font_size(l.from);
		if (font_size_it && font_size_it->font_size > 0) {
			font_size = font_size_it->font_size;
		}
		if (rtl) {
			float offx = 0.0f;
			if (!lrtl && p_frame == main) { 
				offx -= scroll_w;
			}
			font->draw_string(ci, p_ofs + Vector2(p_width - l.offset.x + offx, l.text_buf->get_line_ascent(0)), " " + prefix, HORIZONTAL_ALIGNMENT_LEFT, l.offset.x, font_size, _find_color(l.from, p_base_color));
		} else {
			float offx = 0.0f;
			if (lrtl && p_frame == main) { 
				offx += scroll_w;
			}
			font->draw_string(ci, p_ofs + Vector2(offx, l.text_buf->get_line_ascent(0)), prefix + " ", HORIZONTAL_ALIGNMENT_RIGHT, l.offset.x, font_size, _find_color(l.from, p_base_color));
		}
	}
	
	int dc_lines = l.text_buf->get_dropcap_lines();
	float h_off = l.text_buf->get_dropcap_size().x;
	if (l.dc_ol_size > 0) {
		l.text_buf->draw_dropcap_outline(ci, p_ofs + ((rtl) ? Vector2() : Vector2(l.offset.x, 0)), l.dc_ol_size, l.dc_ol_color);
	}
	l.text_buf->draw_dropcap(ci, p_ofs + ((rtl) ? Vector2() : Vector2(l.offset.x, 0)), l.dc_color);
	int line_count = 0;