isConnected and isAttached functions

I’m having some problems with the 2 of the functions in the Sodaq_R4x library. Both of these functions return inconsistent results:

Sodaq_R4X::isAttached()
Sodaq_R4X::isConnected()

Even when I know the device is connected and attached, I will frequently get a FALSE returned from these functions. Are there any updated fixes to these functions?