Relative altitude not zeroing in instrument panel

The instrument panel is not zeroing my relative altitude on startup is reading as -5m or so. Is it using GPS instead of baro or do I have another issue?

I have the same as @Justin_Cooper. After powering the copter on, relative altitude was -2m and after 4-5 minutes it was -15m.

Does disarming and re-arming reset it?

no it does not. If I lift the plane up 5m it will zero. Its like its comparing GPS alt reading to QGC map altitude.

until you arm the plane it goes off GPS alt so it’s showing you the erro. Then once it’s armed it zeros and uses baro. I think this is sorted out now.