Using HTML text or text formatted by the Style function of the local editor for the Description or Message field in a Provide Information workflow action, will result in HTML tags being added when switching between Pages on that Provide Information workflow action.
The original setup:
After switching to page 2 and back:
After switching to page 2 and back once more:
Another example is the   code ('non breaking spaces') are being added to the text.
Solved in Ivanti Identity Director 2019.0.1.