Repeat column, class toggle, Bug?

wappler 4.4.1
windows 10

As part of a star rating function , I have created a repeat column which contains a font awesome fa-star-O. (Empty star)

When this is clicked the variable rating_selected is updated the class toggles to fa-star. (filled star)

This works perfectly within the wappler preview but not when previewed in browser.
This worked before the update to 4.4

Is this a bug???