let us first congrats you for the release of nopCommerce v2.3. We love it and extending it is much easier.
We have been developing some plugins and precisely the Nop Anywhere Sliders that have a widget support and came across some issues.
then the same java script file will be added as many times as to the number of the zones the widget is added to.
It will be good if when adding a js or css file in the PageTitleBuilder service there is a check if the file to be added already exists.