Hi,
I agree its a problem in standard Class but if you see all standard SAP codes must have been adjusted by SAP as a part of this version. You will have to now just do your bit adjust the custom codes that is there in your landscape. Best would be to raise a call with SAP and see what they reply.
Or the other option might be to rollback this Class to older version but that may impact other programs using it.
Cheers,
Arindam