Notes:
- <<MediaWiki:Tag-foo-description>> tag most likely was created for testing purposes only.
- I did not find any other display regression issues for tags titles.
- it's a regression issue.
- On testwiki wmf.25 go to Special:RecentChanges page
- Click on Tags filter selection and select <<MediaWiki:Tag-foo-description>> tag.
The <<MediaWiki:Tag-foo-description>> tag title displays HTML encoding: