Hi Both,
No known issues for this, and I don’t see any others yet so I don’t think it is wide spread.
If it were my unit, I would first try the complete factory reset to defaults.
If that didn’t work I would get in touch with my dealer for warranty RMA.
There is another somewhat similar post here where the user reverted back to the old GUI and that solved it for them - Victron Cerbo GX Screen Goes Black screen Any Fixes? - #2 by lxonline