### Godot version

v4.2.dev5.official [e3e2528ba]

### System information

Godot v4.2.dev5 - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 970 (NVIDIA; 31.0.15.3623) - Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 Threads)

### Issue description

#79975 closed his issue too early, it's a separate issue to #78434.

I'll just repost his same gif:
![256703477-a7db18c1-eccf-42af-85ef-1a1472f30c73](https://github.com/godotengine/godot/assets/15337628/1a7926ea-a9d8-4eb3-a857-8d34df23228f)

### Steps to reproduce

I had a theory it was related to editor settings and I tracked it down:

1. Editor -> `Display Scale` = Custom
2. Editor -> `Custom Display Scale` = 1.15
3. Click Save & Restart
4. Print stuff

```
var number := 0
func _process(delta: float) -> void:
	number += 1
	print(number)
```

The scale number matters, 1.1 seems to be fine but smaller decimal places such as 1.15 are what cause the issue.

### Minimal reproduction project

[printbug.zip](https://github.com/godotengine/godot/files/12683758/printbug.zip)

fbg_index.x = MIN(i, fbg_index.x);
			fbg_index.y = MAX(i, fbg_index.y);
			draw_box = true;
		}
		if (draw_box) {
			Vector<Vector2> sel = TS->shaped_text_get_selection(p_rid, fbg_index.x, fbg_index.y);
			for (int j = 0; j < sel.size(); j++) {
				Vector2 rect_off = line_off + Vector2(sel[j].x - theme_cache.text_highlight_h_padding, -TS->shaped_text_get_ascent(p_rid) - theme_cache.text_highlight_v_padding);
				Vector2 rect_size = Vector2(sel[j].y - sel[j].x + 2 * theme_cache.text_highlight_h_padding, TS->shaped_text_get_size(p_rid).y + 2 * theme_cache.text_highlight_v_padding);
				RenderingServer::get_singleton()->canvas_item_add_rect(p_ci, Rect2(rect_off, rect_size), last_color);
			}
			fbg_index = Vector2i(end, start);
			draw_box = false;
		}
		if (change_color) {
			fbg_index.x = MIN(i, fbg_index.x);
			fbg_index.y = MAX(i, fbg_index.y);
		}
		last_color = color;
	}
	if (last_color.a > 0) {
		Vector<Vector2> sel = TS->shaped_text_get_selection(p_rid, fbg_index.x, end);
		for (int i = 0; i < sel.size(); i++) {
			Vector2 rect_off = line_off + Vector2(sel[i].x - theme_cache.text_highlight_h_padding, -TS->shaped_text_get_ascent(p_rid) - theme_cache.text_highlight_v_padding);
			Vector2 rect_size = Vector2(sel[i].y - sel[i].x + 2 * theme_cache.text_highlight_h_padding, TS->shaped_text_get_size(p_rid).y + 2 * theme_cache.text_highlight_v_padding);
			RenderingServer::get_singleton()->canvas_item_add_rect(p_ci, Rect2(rect_off, rect_size), last_color);
		}
	}
}
Ref<RichTextEffect> RichTextLabel::_get_custom_effect_by_code(String p_bbcode_identifier) {