When adding multiple items to a bib, if you select "add multiple items" and enter a double digit number (say, 10), only the first item is added. Additionally, if you attempt to add more than 10, say 12, NO items are added. Oops.
Hm, I can't seem to reproduce this on current head? Are you getting any error messages in the logs?
This was my fault, sort of. It turns out I was trying to add multiple items on a barcode that exceeded the length of the field, and the incrementer couldn't increment past the last digit, hence it failed to add more than 10 when it tried to add a digit on to the end.