Thanks for the quick feedback guys. Sorry I’m so delayed in responding, I’d already returned my test VM’s to snapshots and just hadn’t been able to return to this until yesterday.
1.1 seems to have resolved the issue for me. The nodes now behave as expected with regard to the ‘master’ setting. I’m hoping that this is something that was fixed in 1.1 and I’m not just losing my mind…

One other slight problem I’m seeing now:

The disk information does not display for the SN. It does work correctly for the default member.
If i click just below the ‘Failed to connect to’ text, I’m brought to a hardware info page which does contain the file system information I’d expect to see on the chart.