wow, that's good news!
My assumption here about the character disappearing may have something to do with a 'surface' layer. which can be 'volatile'. Maybe i could try adding a 'refresh' button. If you happen to try again and it happens again, try minimising it on the desktop and then bring it back again to see if that brings it back after a few seconds. :)
Thanks for giving it a go and for the feedback. :)