I think this is a (relatively minor) bug in FCPro 12.0.0.2547:
Tools => AutoMetrics… => Optical Metrics => [Next] =>
Preview Text = 0123456789
When changing between:
[Tabular figures] => [Update] and then
[Proportional figures] => [Update] …
I was hoping to be able to preview the difference in spacing between the two choices for “Set character width for digits as” choices. But alas … no dice. It seems to always preview the proportional spacing.
– Clint Goss