I don't understand why the "Contextual Alternates" button/option in Illustrator & InDesign it is not blocked in the interface.
It is activated by default, which is fine BUT if the user copy-paste text frames that belong to fonts without the feature or change the font assigned to the frame a couple of times, the feature can de-activate resulting in a malfunctioning font.
It is a pain to explain all these things to clients when you make a font hat really take advantage of the "Contextual Alternates" possibilities. In my opinion it should be more an icon indicating the feature is present...
Any thoughts on the subject?