Hi there,
I bought the 146/RJ a few days ago and I've just run into this issue as well.
I can confirm that it seems to be connected to the "save state" option. After I had the issue on my first leg, I decided to do a second flight right away. I used the EFB to switch to cold and dark and back to turnaround and voilĂ , the issue was fixed on the next leg.
I hope it can help JF pinpoint the issue somehow!