Hide empty fields in emails not working.

I have always had my forms set to hide empty fields  in emails but it is not working any more. I've deleted and re-added the email notifications and also went into edit the form using the &old addition to the url to get to the advanced settings in preferences to make sure it was enabled (not sure why this option isn't available in the new editor?). Nothing has worked. They are coming through showing the empty fields.

Edit: This is driving me nuts! It hides the fields only about 50% of the time. The last time I tested it, the notification hid the fields but the auto responder didn't (on the same submission). What am I missing? My customers are emailing me thinking that they filled the form out wrong because their emails show so many blanks. 

2nd Edit: I deleted the auto responder again and then added it back in and tested again and it seems to be working. Fingers crossed it doesn't go back to the showing empty fields again. 

I see from your latest edit that the "Hide empty fields in emails" is working properly now. If you do encounter the issue again, you may try clearing your form cache to refresh the form: How to Clear Your Form Cache? If the issue still persists, please let us know.