OP-Z Master Track always showing UNDEF for me

Hi all - new user here. For some reason, my master track always shows UNDEF for both key and mode on it as soon as I start entering notes on any of the synth tracks. Has anyone seen that before, and do you have any suggestions on how to fix it?

And what happens when you enter a bassline ?
Because the master track scale is based on the notes from the bass track (B).
And what do you see when you press shift. Is the Bass track yellow?