Comment 1 for bug 1408758

I've seen this problem with special (outside of A-Z, 0-9) characters in general for MARC expert search since upgrading from 2.4 to 2.7. Marking as confirmed.

(Note that searching the identifier|issn: index would likely be a better, faster approach to achieve the same goal for this specific example, but that doesn't negate the fact that MARC Expert Search has a serious bug).