We are migrating from 2010 to 365. We output html to emails coming out of tasks etc. In 2010 we would use Build String to assign the html to a variable. This doesn't seem to be working in 365. It only puts out some of the text and doesn't seem to pick up any of the references to item properties or variables. We also tried using a workflow variable instead of Build String with the no luck.
How are others dealing with this issue?