Filters on triggers do not work


I am using the tag manager, and I am trying to create a trigger that would become active when the element has a class that contains the word “matomo”.

I have a hyperlink tag with the class
class=“obj-name-link-wrapper big-hover-area matomo-open”
Thus, the above trigger should be activated when I click on the hyperlink. But it is not.
Any idea, why?