Latest update 2.52 is not displaying anything when Heroic Only Filter is checked. When unchecked, "Normal" dungeons appear, but I can see in multiple postings that the word "Heroic" is being used in channels.

Can confirm, getting the same behavior

This is due to "custom" being selected in search patterns, if you uncheck it in 2.52 it will fix the issue. 2.53 contains the fix

Working now, thanks