With regards to some systems (like the TRP and YD) not being functional following a change of aircraft state on the EFB, this possibly could be misunderstood for the FGC test. If the aircraft's power supply is changed when switching states (such as Cold and Dark > Turnaround) an FGC Test will be triggered once the power is restored. Off the top of my head, the FGC Test takes 45 seconds to complete after power has been applied to the aircraft and during that time, a few systems such as the TRP and YD will not be functional. Once the FGC Test is complete, an FGC PASS message will appear at the top right corner of the PFD.
However, we have also found a situation where the FGC Test logic can get confused if a state change is triggered prior to the test being completed. We will be implementing some changes in the next update to the RJ Professional to try and mitigate this.
Mark - Just Flight