CarPlay: dashboardInstructionVariants does not work.

We are creating an app for turn-by-turn navigation in CarPlay. I would like to change the information displayed during navigation between Dashboard and others. I understand from Apple's documentation that this can be achieved by giving strings for both dashboardInstructionVariants and instructionVariants. However, when I actually try it, only the instructionVariants string is displayed. Is this a bug?

CarPlay: dashboardInstructionVariants does not work.
 
 
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