It _has_ been fixed, but the difference that you see has a simple reason.

Zorro now updates the account equity at every bar, even when no trades are open. However, inside a bar the equity is calculated from the profit of the open trades. Downloading the equity at every tick would noticably increase the traffic.

So when you have two trading Zorros on the same account, their contribution to the equity is different and thus they can show different equity values. The Zorro that has the larger open profit also displays the higher equity. But they stay in sync, as the equity is updated once per bar.

Balance = Balance on the account
Equity = Balance + open profit of the Zorro instance.

That's why the green Zorro above shows higher equity than the red Zorro, as it had more profit during the current bar. This will be mentioned more clearly in the manual.