Installation, 3p-System with Fronius Symo coupled on AC out, VenusGX has been recently updated to 2.72 (not sure if this is related, but there might be a correlation/coincidence).
Has been working like a charm for 18 months now, in the recent days (possibly after VenusOS upgrade to 2.72) Fronius "PV Inverter yield" keeps vanishing from the advanced view.
One day it's there, next day ist's gone.
When the PV inverter yield graph is gone and I go to the widgets list, interestingly for fronius "PV Inverter yield" is not there until I hit reload. My educated guess would be that some improvement in VRM and/or VenusOS cancels the Fronius PV yield graph once the Fronius puts itself to sleep overnight and sends no data.