Watch out for Formula RTF fields ... and a fix

With the fixes to the new Rich Text Fields with the 1/21/18 update, I have had problems with 'formula - rich text' fields calculating properly. Almost like there is a type mismatch between 'rich text' and 'text' fields in the formula.

After converting several connected fields to plain text to make them work, on a whim I found a potential solution...

Just open the problematic formula and save it. Then it calcs properly.

Forget the new UI, this could be quite the problem for anyone like me using plain and Rich Text interchangeably.