UNDO function

I can not tell you how often I am in need of an UNDO function. Moving around objects on the canvas, I often accidentally nudge a field within a group, then the field pops out of the group, and I lose my connectors. Having to trace back through the logic and reconnect is the most frustrating thing I’ve discovered thus far with the builder. Just a Command+Z would be a Godsend! Thank you.