Default [Q] KitKat and digital certificates


I downloaded and installed nightly build AOKP on my nexus. The rom flyes on my nexus, only problem i got is when i installed digital certificate for my e-bank account. Now every time i try to access my bank account with this certificate, it warns me that the connection might be monitored by a third party due to my certificate. I don`t know is this a rom issue (bug) or the certificate wasn`t installed properly?
Did not have problems or warnings on JB 4.3 (stock and custom roms). Does anyone have the same problem and maybe a solution?