There is a minor issue with how Data Explorer handles tag output. Ordinarily it replaces every one of them with a decorated and clickable link.
But it seems like whenever that list includes tags with Cyrillic characters, commonly seen e. g. on "Stack Overflow in Russian", it leaves the whole list as plain text.
Here is a query that showcases the issue and a screenshot of the results it outputs right now:
This would appear to be the wrong regexp that matches those: /^(?:<[a-z0-9#.+-]+>)+$/
