Personally, I can work around this, now that we know.
I live aboard, and have always liked the MFD App for it’s big figures, especially now with the choice of Watts display - that’s a winner, thank you.
MFD App also shows the correct Battery Temperature, rather than the incorrect ones shown in the GUI (both versions) and VRM. That issue I raised just yesterday… Battery Temperature Reporting
Thank you for your help with this.