Quickly move the mouse pointer back and forth to locate the pointer example: https://www.youtube.com/watch?v=p2rdXQgoago
settings 4.12.3 and 4.13.2 feature a find cursor utility that can be bound to a keyboard shortcut: https://bluesabre.org/2018/04/21/xfce-settings-4-12-3-4-13-2-released/
I would also consider this fixed.