Created attachment 125182 [details] screenshot of patron library cards When creating a new batch of patron library cards, underneath the barcode, there is a line obstructing the card number saying "HASH(0X55d6.....)". I'm not sure how to remove it.
Could you tell us what fields are in the layout you're using to print the cards? Tools -> Patron card creator -> Layouts -> Edit Or a screenshot of the form?
There is not enough information here to reproduce the bug and it was reported against a rather old version. I am closing invalid for now, please reopen with more information if you still experience this issue.