We use the "Reply To Customer" field in our projects quite heavily. This facilitates communication between the agent and customer and helps us keep all request activity in the same location. As part of our process, we insert a table in to the "reply to customer" field with options for the customer to approve or decline. When we insert the table, it appears in the "reply to customer" editing experience and can be edited/formatted. Once this is saved, the table appears in the request and also in the customer portal. The issue happens when we send a notification email with the comment that allows the customer to get an email with their options instead of having to go to the portal (This is the preferred experience), but the table is not in the email. I have tested this quite heavily and I can not get any of the tables to come across in the notification email. We have the "Public Comment Added" notification for customers turned on and all other input works as expected, except for tables. 
