“Style assets are not really intended to be used with UMG any more. Those styles exist because they were developed before UMG, and are still being used by game teams using raw slate.”
“If you would like to reuse styles you could set up a widget and pull off a reference to it to grab it’s style. From there you could promote the style to a variable that can be called and reused. You could also create a widget and then add this widget to other widgets via the user created section.”