Search by class, when it highlights where else this class is used

bad: sometimes you adjust somewhere a class and in another place it crumbles design, because there the same class is assigned. It often happens.

good: earlier you can see where the class is still applied

how: right-click on the class and select the drop-down list, “show where the class is used”. And this highlights the elements where this class is assigned, on the left in the element tree