Kartik,
At least I am able to do in my system. Could you remove selection ID from user settings (though it should work), save the settings. Thereafter try to load single material.
Though cross check SAP notes
2045930 - Auxiliary Key figures not performing UOM Conversion
2239561 - BAPI PBSRVAPS GETDETAIL2 cannot return key figure UOM/currency
I hope above helps, but make sure you have not activated any badi.
Regards
Rahul