Default No signal indicator

My phone gets signal and shows the data connection type (3G, H, H+) but the signal bars are always grey and never get filled in white. I know actually have signal but I don't know how to get the indicator working again.

It broke when I installed KitKat and I am running on a recent CM11 build with the Boeffla kernel. My IMEI is correct but the serial number doesn't match the one under the battery so that might be related.

My baseband is I9300XXLE8. I have no idea if I need to upgrade that but all the ones I can find are for 4.1 or 4.2.

Any ideas how to get the indicator bars displaying correctly?