notice notice-success is-dismissible in Wordpress does not show in Uipress

The following code snippet native to wordpress (notice-success is-dismissible) does not display as expected when using UIpress. Any ideas why this might be happening or how to fix it?

<div class="notice notice-success is-dismissible"> <p>Reminder deleted successfully!</p> <button type="button" class="notice-dismiss"> <span class="screen-reader-text">Dismiss this notice.</span> </button> </div>