When I use the Flow action, 'Post a choice of options as the Flow bot to a user', the user sees both the list of options and the opportunity to leave a comment.

This is the Flow card appearance, showing both the options and the comments.

After the user hits 'Submit', I want to use the 'comments' variable in future actions in the Flow. As you can see, this dynamic variable is available on the list.

However, I get this error message when I run the Flow:
InvalidTemplate. Unable to process template language expressions in action 'Post_a_message_as_the_Flow_bot_to_a_user_2' inputs at line '1' and column '2643': 'The template language expression 'body('Post_a_choice_of_options_as_the_Flow_bot_to_a_user')['comments']' cannot be evaluated because property 'comments' doesn't exist, available properties are 'responseTime, responder, selectedOption'. Please see https://aka.ms/logicexpressions for usage details.'.
Previously, I was able to extract the comments and use them in Flow actions. Now I can't. From the error message, it looks like this feature has been removed.
Any workarounds for this?