Hello David, first off I removed the link you posted as it was brought to my attention that the site might not be safe. Are you still using photo and graphic designer 6 as it says in your profile? I have been unable to replicate your issue as Egg reported I can type up to 4 digits in mine. Perhaps if the issue happens again you could raise a ticket with Xara support or as Handrawn suggests make a post in the Dear Xara forum.