Hello! It's me again 🙂
Found in the process work even a few features of.
1. The filter does not display topics if the tag contains a + (plus).
Ie the list of tags section, the tag itself is there, but when clicked the result is not displayed.
2. If a topic with a tag is removed from the section, the tag continues to hang in the tag list until the moderator deletes the topic in the "deleted content" section of the moderator panel.
If the tab was a few topics with this tag, then of course no problem.
But if the theme was one, users get false information on the section, seeing a blank page.
When you move the theme to another section, everything works correctly, the tag disappears.